Finding the Fourth Proportional to 14,650.32, 20,216.16 and 8,680.98

Step by Step Solution

1. Step 1: Write the proportion equation
   14,650.32 : 20,216.16 = 8,680.98 : x
2. Step 2: Convert to fraction form
   14,650.32/20,216.16 = 8,680.98/x
3. Step 3: Cross multiply
   14,650.32x = 20,216.16 × 8,680.98
4. Step 4: Simplify right side
   14,650.32x = 175,496,080.64
5. Step 5: Solve for x
   x = 175,496,080.64/14,650.32
6. Step 6: Final answer
   x = 11,978.99