Finding the Fourth Proportional to 8,861.80, 12,229.32 and 4,882.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,861.80 : 12,229.32 = 4,882.72 : x
2. Step 2: Convert to fraction form
   8,861.80/12,229.32 = 4,882.72/x
3. Step 3: Cross multiply
   8,861.80x = 12,229.32 × 4,882.72
4. Step 4: Simplify right side
   8,861.80x = 59,712,345.35
5. Step 5: Solve for x
   x = 59,712,345.35/8,861.80
6. Step 6: Final answer
   x = 6,738.17