Finding the Fourth Proportional to 6,413.27, 8,847.87 and 3,894.42

Step by Step Solution

1. Step 1: Write the proportion equation
   6,413.27 : 8,847.87 = 3,894.42 : x
2. Step 2: Convert to fraction form
   6,413.27/8,847.87 = 3,894.42/x
3. Step 3: Cross multiply
   6,413.27x = 8,847.87 × 3,894.42
4. Step 4: Simplify right side
   6,413.27x = 34,457,321.89
5. Step 5: Solve for x
   x = 34,457,321.89/6,413.27
6. Step 6: Final answer
   x = 5,372.82