Finding the Fourth Proportional to 22,729.50, 31,364.58 and 13,169.75

Step by Step Solution

1. Step 1: Write the proportion equation
   22,729.50 : 31,364.58 = 13,169.75 : x
2. Step 2: Convert to fraction form
   22,729.50/31,364.58 = 13,169.75/x
3. Step 3: Cross multiply
   22,729.50x = 31,364.58 × 13,169.75
4. Step 4: Simplify right side
   22,729.50x = 413,063,454.78
5. Step 5: Solve for x
   x = 413,063,454.78/22,729.50
6. Step 6: Final answer
   x = 18,173.02