Finding the Fourth Proportional to 9,153.59, 12,631.88 and 5,175.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,153.59 : 12,631.88 = 5,175.48 : x
2. Step 2: Convert to fraction form
   9,153.59/12,631.88 = 5,175.48/x
3. Step 3: Cross multiply
   9,153.59x = 12,631.88 × 5,175.48
4. Step 4: Simplify right side
   9,153.59x = 65,376,016.43
5. Step 5: Solve for x
   x = 65,376,016.43/9,153.59
6. Step 6: Final answer
   x = 7,142.12