Finding the Fourth Proportional to 6,413.60, 8,851.52 and 3,896.12

Step by Step Solution

1. Step 1: Write the proportion equation
   6,413.60 : 8,851.52 = 3,896.12 : x
2. Step 2: Convert to fraction form
   6,413.60/8,851.52 = 3,896.12/x
3. Step 3: Cross multiply
   6,413.60x = 8,851.52 × 3,896.12
4. Step 4: Simplify right side
   6,413.60x = 34,486,549.59
5. Step 5: Solve for x
   x = 34,486,549.59/6,413.60
6. Step 6: Final answer
   x = 5,377.10