Please help me solve this problem. I'm struggling. Thank you in advance

Find the interest rate needed for the sinking fund to reach the required amount. Assume that the compounding period is the same as the payment period. $19,654 to be accumulated in 4 years; quarterly payments of $1075 The interest rate needed is approximately \%. (Type an integer or decimal rounded to two decimal places as needed.) Find the periodic payment which will amount to a sum of $12000 if an interest rate 8% is compounded annually at the end of 9 consecutive years. The periodic payment is $ (Round to the nearest cent.)