Finding the Fourth Proportional to 33,240.57, 49,860.72 and 13,518.96

Step by Step Solution

1. Step 1: Write the proportion equation
   33,240.57 : 49,860.72 = 13,518.96 : x
2. Step 2: Convert to fraction form
   33,240.57/49,860.72 = 13,518.96/x
3. Step 3: Cross multiply
   33,240.57x = 49,860.72 × 13,518.96
4. Step 4: Simplify right side
   33,240.57x = 674,065,079.25
5. Step 5: Solve for x
   x = 674,065,079.25/33,240.57
6. Step 6: Final answer
   x = 20,278.39