Finding the Fourth Proportional to 40,868.55, 61,282.71 and 12,791.52

Step by Step Solution

1. Step 1: Write the proportion equation
   40,868.55 : 61,282.71 = 12,791.52 : x
2. Step 2: Convert to fraction form
   40,868.55/61,282.71 = 12,791.52/x
3. Step 3: Cross multiply
   40,868.55x = 61,282.71 × 12,791.52
4. Step 4: Simplify right side
   40,868.55x = 783,899,010.62
5. Step 5: Solve for x
   x = 783,899,010.62/40,868.55
6. Step 6: Final answer
   x = 19,180.98