Finding the Fourth Proportional to 5,103.41, 7,042.61 and 2,865.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,103.41 : 7,042.61 = 2,865.78 : x
2. Step 2: Convert to fraction form
   5,103.41/7,042.61 = 2,865.78/x
3. Step 3: Cross multiply
   5,103.41x = 7,042.61 × 2,865.78
4. Step 4: Simplify right side
   5,103.41x = 20,182,578.05
5. Step 5: Solve for x
   x = 20,182,578.05/5,103.41
6. Step 6: Final answer
   x = 3,954.73