Finding the Fourth Proportional to 3,906.63, 5,391.18 and 2,414.21

Step by Step Solution

1. Step 1: Write the proportion equation
   3,906.63 : 5,391.18 = 2,414.21 : x
2. Step 2: Convert to fraction form
   3,906.63/5,391.18 = 2,414.21/x
3. Step 3: Cross multiply
   3,906.63x = 5,391.18 × 2,414.21
4. Step 4: Simplify right side
   3,906.63x = 13,015,413.71
5. Step 5: Solve for x
   x = 13,015,413.71/3,906.63
6. Step 6: Final answer
   x = 3,331.62