Final answer:
Without the current IRS rules on casualty and theft losses, we cannot accurately compute April's deductible loss that takes into account all limitations and floor amounts.
Step-by-step explanation:
The question asks us to calculate April’s deductible loss from a flood and the theft of her property, considering all applicable limitations on itemized casualty and theft deductions. To compute this, we need to apply the IRS's rules on casualty and theft loss deductions to the amount of the loss incurred by April. Unfortunately, the reference provided doesn't apply directly to individual tax deductions for casualty and theft losses; therefore, we cannot proceed further with the computation. Typically, these deductions are subject to the IRS rules, which often include a reduction of the total loss by $100 and 10% of AGI (Adjusted Gross Income) floor limitation for casualty and theft-related losses. However, without the correct and current year's IRS rules, I cannot provide the accurate deductible amount after applying all limitations and floors.