Finding the Fourth Proportional to 7,774.72, 10,728.92 and 4,238

Step by Step Solution

1. Step 1: Write the proportion equation
   7,774.72 : 10,728.92 = 4,238 : x
2. Step 2: Convert to fraction form
   7,774.72/10,728.92 = 4,238/x
3. Step 3: Cross multiply
   7,774.72x = 10,728.92 × 4,238
4. Step 4: Simplify right side
   7,774.72x = 45,469,162.96
5. Step 5: Solve for x
   x = 45,469,162.96/7,774.72
6. Step 6: Final answer
   x = 5,848.33