please answer this question

A perpetuity makes continuous payments commencing now. The rate of payment decreases geometrically in annual steps. The rate of payment in the first year will be $12,000 p.a. In each subsequent year, the rate of payment will reduce by 2.7%. Determine the present value of the perpetuity at an interest rate of 8.6% pa. Give your answer in dollars and cents, rounded to the nearest cent. (For example, $1234.56)