Finding the Fourth Proportional to 9,151.40, 13,731.69 and 3,608.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,151.40 : 13,731.69 = 3,608.72 : x
2. Step 2: Convert to fraction form
   9,151.40/13,731.69 = 3,608.72/x
3. Step 3: Cross multiply
   9,151.40x = 13,731.69 × 3,608.72
4. Step 4: Simplify right side
   9,151.40x = 49,553,755.68
5. Step 5: Solve for x
   x = 49,553,755.68/9,151.40
6. Step 6: Final answer
   x = 5,414.89