Finding the Fourth Proportional to 5,061.98, 6,988.78 and 3,176.15

Step by Step Solution

1. Step 1: Write the proportion equation
   5,061.98 : 6,988.78 = 3,176.15 : x
2. Step 2: Convert to fraction form
   5,061.98/6,988.78 = 3,176.15/x
3. Step 3: Cross multiply
   5,061.98x = 6,988.78 × 3,176.15
4. Step 4: Simplify right side
   5,061.98x = 22,197,413.60
5. Step 5: Solve for x
   x = 22,197,413.60/5,061.98
6. Step 6: Final answer
   x = 4,385.12