Finding the Fourth Proportional to 4,945.16, 7,413.78 and 2,478.71

Step by Step Solution

1. Step 1: Write the proportion equation
   4,945.16 : 7,413.78 = 2,478.71 : x
2. Step 2: Convert to fraction form
   4,945.16/7,413.78 = 2,478.71/x
3. Step 3: Cross multiply
   4,945.16x = 7,413.78 × 2,478.71
4. Step 4: Simplify right side
   4,945.16x = 18,376,610.62
5. Step 5: Solve for x
   x = 18,376,610.62/4,945.16
6. Step 6: Final answer
   x = 3,716.08