Finding the Fourth Proportional to 5,407.41, 8,086.41 and 3,931.59

Step by Step Solution

1. Step 1: Write the proportion equation
   5,407.41 : 8,086.41 = 3,931.59 : x
2. Step 2: Convert to fraction form
   5,407.41/8,086.41 = 3,931.59/x
3. Step 3: Cross multiply
   5,407.41x = 8,086.41 × 3,931.59
4. Step 4: Simplify right side
   5,407.41x = 31,792,429.03
5. Step 5: Solve for x
   x = 31,792,429.03/5,407.41
6. Step 6: Final answer
   x = 5,879.42