Finding the Fourth Proportional to 22,338.03, 30,824.20 and 13,385.31

Step by Step Solution

1. Step 1: Write the proportion equation
   22,338.03 : 30,824.20 = 13,385.31 : x
2. Step 2: Convert to fraction form
   22,338.03/30,824.20 = 13,385.31/x
3. Step 3: Cross multiply
   22,338.03x = 30,824.20 × 13,385.31
4. Step 4: Simplify right side
   22,338.03x = 412,591,472.50
5. Step 5: Solve for x
   x = 412,591,472.50/22,338.03
6. Step 6: Final answer
   x = 18,470.36