Answer:
He sold the house for $325,120.
Explanation:
A realtor earns a 3.25% commission on the sale of each house.
He earned his commission on a house sell = $10,566.40
Let the price on which he sold a house be 'p'
Therefore, 3.25% × p = $10,566.40
0.0325 × p = 10566.40
p =

p = $325,120
He sold the house for $325,120.