Finding the Fourth Proportional to 22,105.50, 30,505.60 and 12,169.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,105.50 : 30,505.60 = 12,169.50 : x
2. Step 2: Convert to fraction form
   22,105.50/30,505.60 = 12,169.50/x
3. Step 3: Cross multiply
   22,105.50x = 30,505.60 × 12,169.50
4. Step 4: Simplify right side
   22,105.50x = 371,237,899.20
5. Step 5: Solve for x
   x = 371,237,899.20/22,105.50
6. Step 6: Final answer
   x = 16,793.92