Finding the Fourth Proportional to 16,965.18, 23,413.61 and 9,411.53

Step by Step Solution

1. Step 1: Write the proportion equation
   16,965.18 : 23,413.61 = 9,411.53 : x
2. Step 2: Convert to fraction form
   16,965.18/23,413.61 = 9,411.53/x
3. Step 3: Cross multiply
   16,965.18x = 23,413.61 × 9,411.53
4. Step 4: Simplify right side
   16,965.18x = 220,357,799.38
5. Step 5: Solve for x
   x = 220,357,799.38/16,965.18
6. Step 6: Final answer
   x = 12,988.83