Finding the Fourth Proportional to 33,143.31, 49,715.10 and 13,422.24

Step by Step Solution

1. Step 1: Write the proportion equation
   33,143.31 : 49,715.10 = 13,422.24 : x
2. Step 2: Convert to fraction form
   33,143.31/49,715.10 = 13,422.24/x
3. Step 3: Cross multiply
   33,143.31x = 49,715.10 × 13,422.24
4. Step 4: Simplify right side
   33,143.31x = 667,288,003.82
5. Step 5: Solve for x
   x = 667,288,003.82/33,143.31
6. Step 6: Final answer
   x = 20,133.41