Finding the Fourth Proportional to 16,823.88, 25,224.78 and 9,429.12

Step by Step Solution

1. Step 1: Write the proportion equation
   16,823.88 : 25,224.78 = 9,429.12 : x
2. Step 2: Convert to fraction form
   16,823.88/25,224.78 = 9,429.12/x
3. Step 3: Cross multiply
   16,823.88x = 25,224.78 × 9,429.12
4. Step 4: Simplify right side
   16,823.88x = 237,847,477.59
5. Step 5: Solve for x
   x = 237,847,477.59/16,823.88
6. Step 6: Final answer
   x = 14,137.49