Finding the Fourth Proportional to 11,689.39, 17,538.18 and 7,301.71

Step by Step Solution

1. Step 1: Write the proportion equation
   11,689.39 : 17,538.18 = 7,301.71 : x
2. Step 2: Convert to fraction form
   11,689.39/17,538.18 = 7,301.71/x
3. Step 3: Cross multiply
   11,689.39x = 17,538.18 × 7,301.71
4. Step 4: Simplify right side
   11,689.39x = 128,058,704.29
5. Step 5: Solve for x
   x = 128,058,704.29/11,689.39
6. Step 6: Final answer
   x = 10,955.12