Finding the Fourth Proportional to 5,103.48, 7,042.73 and 2,865.15

Step by Step Solution

1. Step 1: Write the proportion equation
   5,103.48 : 7,042.73 = 2,865.15 : x
2. Step 2: Convert to fraction form
   5,103.48/7,042.73 = 2,865.15/x
3. Step 3: Cross multiply
   5,103.48x = 7,042.73 × 2,865.15
4. Step 4: Simplify right side
   5,103.48x = 20,178,477.86
5. Step 5: Solve for x
   x = 20,178,477.86/5,103.48
6. Step 6: Final answer
   x = 3,953.87