Finding the Fourth Proportional to 5,100.31, 7,038.50 and 2,862.05

Step by Step Solution

1. Step 1: Write the proportion equation
   5,100.31 : 7,038.50 = 2,862.05 : x
2. Step 2: Convert to fraction form
   5,100.31/7,038.50 = 2,862.05/x
3. Step 3: Cross multiply
   5,100.31x = 7,038.50 × 2,862.05
4. Step 4: Simplify right side
   5,100.31x = 20,144,524.61
5. Step 5: Solve for x
   x = 20,144,524.61/5,100.31
6. Step 6: Final answer
   x = 3,949.67