Finding the Fourth Proportional to 16,612.72, 24,928.38 and 9,216.16

Step by Step Solution

1. Step 1: Write the proportion equation
   16,612.72 : 24,928.38 = 9,216.16 : x
2. Step 2: Convert to fraction form
   16,612.72/24,928.38 = 9,216.16/x
3. Step 3: Cross multiply
   16,612.72x = 24,928.38 × 9,216.16
4. Step 4: Simplify right side
   16,612.72x = 229,743,938.62
5. Step 5: Solve for x
   x = 229,743,938.62/16,612.72
6. Step 6: Final answer
   x = 13,829.40