Finding the Fourth Proportional to 5,391.72, 8,082.72 and 1,879.38

Step by Step Solution

1. Step 1: Write the proportion equation
   5,391.72 : 8,082.72 = 1,879.38 : x
2. Step 2: Convert to fraction form
   5,391.72/8,082.72 = 1,879.38/x
3. Step 3: Cross multiply
   5,391.72x = 8,082.72 × 1,879.38
4. Step 4: Simplify right side
   5,391.72x = 15,190,502.31
5. Step 5: Solve for x
   x = 15,190,502.31/5,391.72
6. Step 6: Final answer
   x = 2,817.38