Finding the Fourth Proportional to 8,233.62, 11,358.42 and 7,915.38

Step by Step Solution

1. Step 1: Write the proportion equation
   8,233.62 : 11,358.42 = 7,915.38 : x
2. Step 2: Convert to fraction form
   8,233.62/11,358.42 = 7,915.38/x
3. Step 3: Cross multiply
   8,233.62x = 11,358.42 × 7,915.38
4. Step 4: Simplify right side
   8,233.62x = 89,906,210.50
5. Step 5: Solve for x
   x = 89,906,210.50/8,233.62
6. Step 6: Final answer
   x = 10,919.40