Finding the Fourth Proportional to 9,359.34, 12,915.72 and 5,167.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,359.34 : 12,915.72 = 5,167.50 : x
2. Step 2: Convert to fraction form
   9,359.34/12,915.72 = 5,167.50/x
3. Step 3: Cross multiply
   9,359.34x = 12,915.72 × 5,167.50
4. Step 4: Simplify right side
   9,359.34x = 66,741,983.10
5. Step 5: Solve for x
   x = 66,741,983.10/9,359.34
6. Step 6: Final answer
   x = 7,131.06