Finding the Fourth Proportional to 5,404.62, 8,145.66 and 5,103.18

Step by Step Solution

1. Step 1: Write the proportion equation
   5,404.62 : 8,145.66 = 5,103.18 : x
2. Step 2: Convert to fraction form
   5,404.62/8,145.66 = 5,103.18/x
3. Step 3: Cross multiply
   5,404.62x = 8,145.66 × 5,103.18
4. Step 4: Simplify right side
   5,404.62x = 41,568,769.20
5. Step 5: Solve for x
   x = 41,568,769.20/5,404.62
6. Step 6: Final answer
   x = 7,691.34