Finding the Fourth Proportional to 12,413.49, 18,589.86 and 8,017.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,413.49 : 18,589.86 = 8,017.62 : x
2. Step 2: Convert to fraction form
   12,413.49/18,589.86 = 8,017.62/x
3. Step 3: Cross multiply
   12,413.49x = 18,589.86 × 8,017.62
4. Step 4: Simplify right side
   12,413.49x = 149,046,433.33
5. Step 5: Solve for x
   x = 149,046,433.33/12,413.49
6. Step 6: Final answer
   x = 12,006.81