Finding the Fourth Proportional to 33,139.52, 49,726.56 and 13,432.64

Step by Step Solution

1. Step 1: Write the proportion equation
   33,139.52 : 49,726.56 = 13,432.64 : x
2. Step 2: Convert to fraction form
   33,139.52/49,726.56 = 13,432.64/x
3. Step 3: Cross multiply
   33,139.52x = 49,726.56 × 13,432.64
4. Step 4: Simplify right side
   33,139.52x = 667,958,978.92
5. Step 5: Solve for x
   x = 667,958,978.92/33,139.52
6. Step 6: Final answer
   x = 20,155.96