Finding the Fourth Proportional to 14,598.64, 21,870.27 and 8,662.98

Step by Step Solution

1. Step 1: Write the proportion equation
   14,598.64 : 21,870.27 = 8,662.98 : x
2. Step 2: Convert to fraction form
   14,598.64/21,870.27 = 8,662.98/x
3. Step 3: Cross multiply
   14,598.64x = 21,870.27 × 8,662.98
4. Step 4: Simplify right side
   14,598.64x = 189,461,793.62
5. Step 5: Solve for x
   x = 189,461,793.62/14,598.64
6. Step 6: Final answer
   x = 12,978.04