Final answer:
Robertson Construction would recognize $4,000,000 in revenue in 2016.
Step-by-step explanation:
Robertson Construction recognizes revenue over time according to percentage of completion. To determine the revenue recognized in 2016, we need to calculate the percentage of completion for 2016 and multiply it by the fixed price of $12,000,000.
Given the estimated additional cost incurred in 2016 is $3,000,000 and the total cost to complete in 2016 is $6,000,000, the percentage of completion for 2016 is ($3,000,000 / $9,000,000) * 100% = 33.33%.
Therefore, the revenue recognized in 2016 is 33.33% * $12,000,000 = $4,000,000.