Finding the Fourth Proportional to 16,966.61, 23,413.88 and 9,414.09

Step by Step Solution

1. Step 1: Write the proportion equation
   16,966.61 : 23,413.88 = 9,414.09 : x
2. Step 2: Convert to fraction form
   16,966.61/23,413.88 = 9,414.09/x
3. Step 3: Cross multiply
   16,966.61x = 23,413.88 × 9,414.09
4. Step 4: Simplify right side
   16,966.61x = 220,420,326.50
5. Step 5: Solve for x
   x = 220,420,326.50/16,966.61
6. Step 6: Final answer
   x = 12,991.42