Finding the Fourth Proportional to 22,505.39, 31,056.50 and 12,944.55

Step by Step Solution

1. Step 1: Write the proportion equation
   22,505.39 : 31,056.50 = 12,944.55 : x
2. Step 2: Convert to fraction form
   22,505.39/31,056.50 = 12,944.55/x
3. Step 3: Cross multiply
   22,505.39x = 31,056.50 × 12,944.55
4. Step 4: Simplify right side
   22,505.39x = 402,012,417.08
5. Step 5: Solve for x
   x = 402,012,417.08/22,505.39
6. Step 6: Final answer
   x = 17,862.94