Finding the Fourth Proportional to 5,180.56, 7,149.20 and 2,822.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,180.56 : 7,149.20 = 2,822.72 : x
2. Step 2: Convert to fraction form
   5,180.56/7,149.20 = 2,822.72/x
3. Step 3: Cross multiply
   5,180.56x = 7,149.20 × 2,822.72
4. Step 4: Simplify right side
   5,180.56x = 20,180,189.82
5. Step 5: Solve for x
   x = 20,180,189.82/5,180.56
6. Step 6: Final answer
   x = 3,895.37