Finding the Fourth Proportional to 9,153.92, 12,632.99 and 5,175.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,153.92 : 12,632.99 = 5,175.72 : x
2. Step 2: Convert to fraction form
   9,153.92/12,632.99 = 5,175.72/x
3. Step 3: Cross multiply
   9,153.92x = 12,632.99 × 5,175.72
4. Step 4: Simplify right side
   9,153.92x = 65,384,793.12
5. Step 5: Solve for x
   x = 65,384,793.12/9,153.92
6. Step 6: Final answer
   x = 7,142.82