Finding the Fourth Proportional to 7,081.80, 10,617.90 and 3,963.95

Step by Step Solution

1. Step 1: Write the proportion equation
   7,081.80 : 10,617.90 = 3,963.95 : x
2. Step 2: Convert to fraction form
   7,081.80/10,617.90 = 3,963.95/x
3. Step 3: Cross multiply
   7,081.80x = 10,617.90 × 3,963.95
4. Step 4: Simplify right side
   7,081.80x = 42,088,878.59
5. Step 5: Solve for x
   x = 42,088,878.59/7,081.80
6. Step 6: Final answer
   x = 5,943.25