You have a $64,014 portfolio that consists of $15,372 invested in Stock A, $22,870 invested in Stock B, $5,135 invested in Stock C, and the remainder in Stock D. The portfolio has a return of 17.3 percent. The return for Stock A is 8.9 percent, for Stock B is 34.6 percent, and for Stock C is 17.7 percent. What is the return for Stock D?