Finding the Fourth Proportional to 16,123.93, 22,247.17 and 9,405.74

Step by Step Solution

1. Step 1: Write the proportion equation
   16,123.93 : 22,247.17 = 9,405.74 : x
2. Step 2: Convert to fraction form
   16,123.93/22,247.17 = 9,405.74/x
3. Step 3: Cross multiply
   16,123.93x = 22,247.17 × 9,405.74
4. Step 4: Simplify right side
   16,123.93x = 209,251,128.86
5. Step 5: Solve for x
   x = 209,251,128.86/16,123.93
6. Step 6: Final answer
   x = 12,977.68