Finding the Fourth Proportional to 5,116.50, 7,061.17 and 2,878.24

Step by Step Solution

1. Step 1: Write the proportion equation
   5,116.50 : 7,061.17 = 2,878.24 : x
2. Step 2: Convert to fraction form
   5,116.50/7,061.17 = 2,878.24/x
3. Step 3: Cross multiply
   5,116.50x = 7,061.17 × 2,878.24
4. Step 4: Simplify right side
   5,116.50x = 20,323,735.08
5. Step 5: Solve for x
   x = 20,323,735.08/5,116.50
6. Step 6: Final answer
   x = 3,972.20