Finding the Fourth Proportional to 5,456.31, 8,180.82 and 2,168.52

Step by Step Solution

1. Step 1: Write the proportion equation
   5,456.31 : 8,180.82 = 2,168.52 : x
2. Step 2: Convert to fraction form
   5,456.31/8,180.82 = 2,168.52/x
3. Step 3: Cross multiply
   5,456.31x = 8,180.82 × 2,168.52
4. Step 4: Simplify right side
   5,456.31x = 17,740,271.79
5. Step 5: Solve for x
   x = 17,740,271.79/5,456.31
6. Step 6: Final answer
   x = 3,251.33