Finding the Fourth Proportional to 5,103.39, 7,042.71 and 2,865.36

Step by Step Solution

1. Step 1: Write the proportion equation
   5,103.39 : 7,042.71 = 2,865.36 : x
2. Step 2: Convert to fraction form
   5,103.39/7,042.71 = 2,865.36/x
3. Step 3: Cross multiply
   5,103.39x = 7,042.71 × 2,865.36
4. Step 4: Simplify right side
   5,103.39x = 20,179,899.53
5. Step 5: Solve for x
   x = 20,179,899.53/5,103.39
6. Step 6: Final answer
   x = 3,954.21