Finding the Fourth Proportional to 5,114.71, 7,058.56 and 2,877.29

Step by Step Solution

1. Step 1: Write the proportion equation
   5,114.71 : 7,058.56 = 2,877.29 : x
2. Step 2: Convert to fraction form
   5,114.71/7,058.56 = 2,877.29/x
3. Step 3: Cross multiply
   5,114.71x = 7,058.56 × 2,877.29
4. Step 4: Simplify right side
   5,114.71x = 20,309,509.72
5. Step 5: Solve for x
   x = 20,309,509.72/5,114.71
6. Step 6: Final answer
   x = 3,970.80