Finding the Fourth Proportional to 16,490.42, 22,751.25 and 9,411.86

Step by Step Solution

1. Step 1: Write the proportion equation
   16,490.42 : 22,751.25 = 9,411.86 : x
2. Step 2: Convert to fraction form
   16,490.42/22,751.25 = 9,411.86/x
3. Step 3: Cross multiply
   16,490.42x = 22,751.25 × 9,411.86
4. Step 4: Simplify right side
   16,490.42x = 214,131,579.83
5. Step 5: Solve for x
   x = 214,131,579.83/16,490.42
6. Step 6: Final answer
   x = 12,985.21