Finding the Fourth Proportional to 5,174.72, 7,724.51 and 4,789.24

Step by Step Solution

1. Step 1: Write the proportion equation
   5,174.72 : 7,724.51 = 4,789.24 : x
2. Step 2: Convert to fraction form
   5,174.72/7,724.51 = 4,789.24/x
3. Step 3: Cross multiply
   5,174.72x = 7,724.51 × 4,789.24
4. Step 4: Simplify right side
   5,174.72x = 36,994,532.27
5. Step 5: Solve for x
   x = 36,994,532.27/5,174.72
6. Step 6: Final answer
   x = 7,149.09