Finding the Fourth Proportional to 16,404.80, 24,609.60 and 8,614.20

Step by Step Solution

1. Step 1: Write the proportion equation
   16,404.80 : 24,609.60 = 8,614.20 : x
2. Step 2: Convert to fraction form
   16,404.80/24,609.60 = 8,614.20/x
3. Step 3: Cross multiply
   16,404.80x = 24,609.60 × 8,614.20
4. Step 4: Simplify right side
   16,404.80x = 211,992,016.32
5. Step 5: Solve for x
   x = 211,992,016.32/16,404.80
6. Step 6: Final answer
   x = 12,922.56