Finding the Fourth Proportional to 33,087.47, 49,640.47 and 13,379.87

Step by Step Solution

1. Step 1: Write the proportion equation
   33,087.47 : 49,640.47 = 13,379.87 : x
2. Step 2: Convert to fraction form
   33,087.47/49,640.47 = 13,379.87/x
3. Step 3: Cross multiply
   33,087.47x = 49,640.47 × 13,379.87
4. Step 4: Simplify right side
   33,087.47x = 664,182,884.39
5. Step 5: Solve for x
   x = 664,182,884.39/33,087.47
6. Step 6: Final answer
   x = 20,073.55