Finding the Fourth Proportional to 5,417.15, 8,124.81 and 2,131.18

Step by Step Solution

1. Step 1: Write the proportion equation
   5,417.15 : 8,124.81 = 2,131.18 : x
2. Step 2: Convert to fraction form
   5,417.15/8,124.81 = 2,131.18/x
3. Step 3: Cross multiply
   5,417.15x = 8,124.81 × 2,131.18
4. Step 4: Simplify right side
   5,417.15x = 17,315,404.27
5. Step 5: Solve for x
   x = 17,315,404.27/5,417.15
6. Step 6: Final answer
   x = 3,196.41