Finding the Fourth Proportional to 8,861.60, 12,229.55 and 4,882.71

Step by Step Solution

1. Step 1: Write the proportion equation
   8,861.60 : 12,229.55 = 4,882.71 : x
2. Step 2: Convert to fraction form
   8,861.60/12,229.55 = 4,882.71/x
3. Step 3: Cross multiply
   8,861.60x = 12,229.55 × 4,882.71
4. Step 4: Simplify right side
   8,861.60x = 59,713,321.67
5. Step 5: Solve for x
   x = 59,713,321.67/8,861.60
6. Step 6: Final answer
   x = 6,738.44