Finding the Fourth Proportional to 16,123.69, 22,250.28 and 9,409.60

Step by Step Solution

1. Step 1: Write the proportion equation
   16,123.69 : 22,250.28 = 9,409.60 : x
2. Step 2: Convert to fraction form
   16,123.69/22,250.28 = 9,409.60/x
3. Step 3: Cross multiply
   16,123.69x = 22,250.28 × 9,409.60
4. Step 4: Simplify right side
   16,123.69x = 209,366,234.69
5. Step 5: Solve for x
   x = 209,366,234.69/16,123.69
6. Step 6: Final answer
   x = 12,985.01