Finding the Fourth Proportional to 5,116.32, 7,061.12 and 2,878.56

Step by Step Solution

1. Step 1: Write the proportion equation
   5,116.32 : 7,061.12 = 2,878.56 : x
2. Step 2: Convert to fraction form
   5,116.32/7,061.12 = 2,878.56/x
3. Step 3: Cross multiply
   5,116.32x = 7,061.12 × 2,878.56
4. Step 4: Simplify right side
   5,116.32x = 20,325,857.59
5. Step 5: Solve for x
   x = 20,325,857.59/5,116.32
6. Step 6: Final answer
   x = 3,972.75