Finding the Fourth Proportional to 8,915.91, 12,306.17 and 5,562.62

Step by Step Solution

1. Step 1: Write the proportion equation
   8,915.91 : 12,306.17 = 5,562.62 : x
2. Step 2: Convert to fraction form
   8,915.91/12,306.17 = 5,562.62/x
3. Step 3: Cross multiply
   8,915.91x = 12,306.17 × 5,562.62
4. Step 4: Simplify right side
   8,915.91x = 68,454,547.37
5. Step 5: Solve for x
   x = 68,454,547.37/8,915.91
6. Step 6: Final answer
   x = 7,677.80