Finding the Fourth Proportional to 22,657.50, 31,269.27 and 12,723.42

Step by Step Solution

1. Step 1: Write the proportion equation
   22,657.50 : 31,269.27 = 12,723.42 : x
2. Step 2: Convert to fraction form
   22,657.50/31,269.27 = 12,723.42/x
3. Step 3: Cross multiply
   22,657.50x = 31,269.27 × 12,723.42
4. Step 4: Simplify right side
   22,657.50x = 397,852,055.30
5. Step 5: Solve for x
   x = 397,852,055.30/22,657.50
6. Step 6: Final answer
   x = 17,559.40