Finding the Fourth Proportional to 33,139.24, 49,719.80 and 13,434.37

Step by Step Solution

1. Step 1: Write the proportion equation
   33,139.24 : 49,719.80 = 13,434.37 : x
2. Step 2: Convert to fraction form
   33,139.24/49,719.80 = 13,434.37/x
3. Step 3: Cross multiply
   33,139.24x = 49,719.80 × 13,434.37
4. Step 4: Simplify right side
   33,139.24x = 667,954,189.53
5. Step 5: Solve for x
   x = 667,954,189.53/33,139.24
6. Step 6: Final answer
   x = 20,155.99