Finding the Fourth Proportional to 33,974.88, 50,943.12 and 13,978.80

Step by Step Solution

1. Step 1: Write the proportion equation
   33,974.88 : 50,943.12 = 13,978.80 : x
2. Step 2: Convert to fraction form
   33,974.88/50,943.12 = 13,978.80/x
3. Step 3: Cross multiply
   33,974.88x = 50,943.12 × 13,978.80
4. Step 4: Simplify right side
   33,974.88x = 712,123,685.86
5. Step 5: Solve for x
   x = 712,123,685.86/33,974.88
6. Step 6: Final answer
   x = 20,960.30