Finding the Fourth Proportional to 8,764.62, 12,088.32 and 5,621.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,764.62 : 12,088.32 = 5,621.10 : x
2. Step 2: Convert to fraction form
   8,764.62/12,088.32 = 5,621.10/x
3. Step 3: Cross multiply
   8,764.62x = 12,088.32 × 5,621.10
4. Step 4: Simplify right side
   8,764.62x = 67,949,655.55
5. Step 5: Solve for x
   x = 67,949,655.55/8,764.62
6. Step 6: Final answer
   x = 7,752.72