Finding the Fourth Proportional to 16,399.54, 22,627.47 and 9,329.86

Step by Step Solution

1. Step 1: Write the proportion equation
   16,399.54 : 22,627.47 = 9,329.86 : x
2. Step 2: Convert to fraction form
   16,399.54/22,627.47 = 9,329.86/x
3. Step 3: Cross multiply
   16,399.54x = 22,627.47 × 9,329.86
4. Step 4: Simplify right side
   16,399.54x = 211,111,070.69
5. Step 5: Solve for x
   x = 211,111,070.69/16,399.54
6. Step 6: Final answer
   x = 12,872.99