Finding the Fourth Proportional to 33,140.24, 49,721.30 and 13,435.37

Step by Step Solution

1. Step 1: Write the proportion equation
   33,140.24 : 49,721.30 = 13,435.37 : x
2. Step 2: Convert to fraction form
   33,140.24/49,721.30 = 13,435.37/x
3. Step 3: Cross multiply
   33,140.24x = 49,721.30 × 13,435.37
4. Step 4: Simplify right side
   33,140.24x = 668,024,062.38
5. Step 5: Solve for x
   x = 668,024,062.38/33,140.24
6. Step 6: Final answer
   x = 20,157.49