Finding the Fourth Proportional to 16,131.73, 22,260.72 and 9,416.32

Step by Step Solution

1. Step 1: Write the proportion equation
   16,131.73 : 22,260.72 = 9,416.32 : x
2. Step 2: Convert to fraction form
   16,131.73/22,260.72 = 9,416.32/x
3. Step 3: Cross multiply
   16,131.73x = 22,260.72 × 9,416.32
4. Step 4: Simplify right side
   16,131.73x = 209,614,062.95
5. Step 5: Solve for x
   x = 209,614,062.95/16,131.73
6. Step 6: Final answer
   x = 12,993.90