Finding the Fourth Proportional to 8,269.30, 12,413.55 and 4,986.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,269.30 : 12,413.55 = 4,986.10 : x
2. Step 2: Convert to fraction form
   8,269.30/12,413.55 = 4,986.10/x
3. Step 3: Cross multiply
   8,269.30x = 12,413.55 × 4,986.10
4. Step 4: Simplify right side
   8,269.30x = 61,895,201.66
5. Step 5: Solve for x
   x = 61,895,201.66/8,269.30
6. Step 6: Final answer
   x = 7,484.94