Finding the Fourth Proportional to 22,550.59, 31,121.37 and 12,479.45

Step by Step Solution

1. Step 1: Write the proportion equation
   22,550.59 : 31,121.37 = 12,479.45 : x
2. Step 2: Convert to fraction form
   22,550.59/31,121.37 = 12,479.45/x
3. Step 3: Cross multiply
   22,550.59x = 31,121.37 × 12,479.45
4. Step 4: Simplify right side
   22,550.59x = 388,377,580.85
5. Step 5: Solve for x
   x = 388,377,580.85/22,550.59
6. Step 6: Final answer
   x = 17,222.50