Finding the Fourth Proportional to 9,689.16, 13,371.29 and 5,440.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,689.16 : 13,371.29 = 5,440.56 : x
2. Step 2: Convert to fraction form
   9,689.16/13,371.29 = 5,440.56/x
3. Step 3: Cross multiply
   9,689.16x = 13,371.29 × 5,440.56
4. Step 4: Simplify right side
   9,689.16x = 72,747,305.52
5. Step 5: Solve for x
   x = 72,747,305.52/9,689.16
6. Step 6: Final answer
   x = 7,508.11