Finding the Fourth Proportional to 10,940.46, 16,413.57 and 3,921.18

Step by Step Solution

1. Step 1: Write the proportion equation
   10,940.46 : 16,413.57 = 3,921.18 : x
2. Step 2: Convert to fraction form
   10,940.46/16,413.57 = 3,921.18/x
3. Step 3: Cross multiply
   10,940.46x = 16,413.57 × 3,921.18
4. Step 4: Simplify right side
   10,940.46x = 64,360,562.41
5. Step 5: Solve for x
   x = 64,360,562.41/10,940.46
6. Step 6: Final answer
   x = 5,882.80