Finding the Fourth Proportional to 5,118.69, 7,676.72 and 1,831.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,118.69 : 7,676.72 = 1,831.31 : x
2. Step 2: Convert to fraction form
   5,118.69/7,676.72 = 1,831.31/x
3. Step 3: Cross multiply
   5,118.69x = 7,676.72 × 1,831.31
4. Step 4: Simplify right side
   5,118.69x = 14,058,452.52
5. Step 5: Solve for x
   x = 14,058,452.52/5,118.69
6. Step 6: Final answer
   x = 2,746.49