Finding the Fourth Proportional to 8,861.92, 12,230.88 and 5,506.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,861.92 : 12,230.88 = 5,506.72 : x
2. Step 2: Convert to fraction form
   8,861.92/12,230.88 = 5,506.72/x
3. Step 3: Cross multiply
   8,861.92x = 12,230.88 × 5,506.72
4. Step 4: Simplify right side
   8,861.92x = 67,352,031.51
5. Step 5: Solve for x
   x = 67,352,031.51/8,861.92
6. Step 6: Final answer
   x = 7,600.16