Finding the Fourth Proportional to 9,359.18, 12,915.33 and 5,167.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,359.18 : 12,915.33 = 5,167.34 : x
2. Step 2: Convert to fraction form
   9,359.18/12,915.33 = 5,167.34/x
3. Step 3: Cross multiply
   9,359.18x = 12,915.33 × 5,167.34
4. Step 4: Simplify right side
   9,359.18x = 66,737,901.32
5. Step 5: Solve for x
   x = 66,737,901.32/9,359.18
6. Step 6: Final answer
   x = 7,130.74