Finding the Fourth Proportional to 5,116.26, 7,061.06 and 2,878.23

Step by Step Solution

1. Step 1: Write the proportion equation
   5,116.26 : 7,061.06 = 2,878.23 : x
2. Step 2: Convert to fraction form
   5,116.26/7,061.06 = 2,878.23/x
3. Step 3: Cross multiply
   5,116.26x = 7,061.06 × 2,878.23
4. Step 4: Simplify right side
   5,116.26x = 20,323,361.92
5. Step 5: Solve for x
   x = 20,323,361.92/5,116.26
6. Step 6: Final answer
   x = 3,972.31