Finding the Fourth Proportional to 5,180.15, 7,148.52 and 2,822.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,180.15 : 7,148.52 = 2,822.31 : x
2. Step 2: Convert to fraction form
   5,180.15/7,148.52 = 2,822.31/x
3. Step 3: Cross multiply
   5,180.15x = 7,148.52 × 2,822.31
4. Step 4: Simplify right side
   5,180.15x = 20,175,339.48
5. Step 5: Solve for x
   x = 20,175,339.48/5,180.15
6. Step 6: Final answer
   x = 3,894.74