Suppose you take a 15-year mortgage for a house that costs $272,016. Assume the following: The annual interest rate on the mortgage is 3.8%. The bank requires a minimum down payment of 12% of the cost of the house. The annual property tax is 1.7% of the cost of the house. The annual homeowner's insurance is $734. The monthly PMI is $71. If you make the minimum down payment, what is the minimum gross monthly salary you must earn in order to satisfy the 28% rule