Finding the Fourth Proportional to 36,123.38, 54,188.71 and 13,628.41

Step by Step Solution

1. Step 1: Write the proportion equation
   36,123.38 : 54,188.71 = 13,628.41 : x
2. Step 2: Convert to fraction form
   36,123.38/54,188.71 = 13,628.41/x
3. Step 3: Cross multiply
   36,123.38x = 54,188.71 × 13,628.41
4. Step 4: Simplify right side
   36,123.38x = 738,505,957.25
5. Step 5: Solve for x
   x = 738,505,957.25/36,123.38
6. Step 6: Final answer
   x = 20,443.99