Finding the Fourth Proportional to 5,100.86, 7,039.19 and 2,862.74

Step by Step Solution

1. Step 1: Write the proportion equation
   5,100.86 : 7,039.19 = 2,862.74 : x
2. Step 2: Convert to fraction form
   5,100.86/7,039.19 = 2,862.74/x
3. Step 3: Cross multiply
   5,100.86x = 7,039.19 × 2,862.74
4. Step 4: Simplify right side
   5,100.86x = 20,151,370.78
5. Step 5: Solve for x
   x = 20,151,370.78/5,100.86
6. Step 6: Final answer
   x = 3,950.58