Investment X yields a payment of $6000 at the end of year 1, a payment of $8000 at the end of year 2, a payment of $9000 at the end of year 3, and a payment of $15000 at the end of year 4. Investment Y yields a payment of $15000 at the end of year 1, a payment of $9000 at the end of year 2, a payment of $8000 at the end of year 3, and a payment of $6000 at the end of year 4. What is the present value of Investment Y if the interest rate is 11%