> Help with annual interest rate question?

Help with annual interest rate question?

Posted at: 2014-12-05 
quaterly so periods =4 x 3 = 12

interest rate 5.25 yearly so 5.25/4 = 1.3125 % per quater

28403 /((1+ .013125)^12)

= $ 24 288.9

The question is: Today, in another account, you have $28403 in your account. What did you deposit into your account three years ago if the annual interest rate was fixed at 5.25% and interest earned is compounded quarterly.

Thank you if you decide to help