Finding the Fourth Proportional to 12,618.89, 17,413.83 and 6,954.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,618.89 : 17,413.83 = 6,954.16 : x
2. Step 2: Convert to fraction form
   12,618.89/17,413.83 = 6,954.16/x
3. Step 3: Cross multiply
   12,618.89x = 17,413.83 × 6,954.16
4. Step 4: Simplify right side
   12,618.89x = 121,098,560.03
5. Step 5: Solve for x
   x = 121,098,560.03/12,618.89
6. Step 6: Final answer
   x = 9,596.61