Finding the Fourth Proportional to 5,086.44, 7,626.78 and 3,139.56

Step by Step Solution

1. Step 1: Write the proportion equation
   5,086.44 : 7,626.78 = 3,139.56 : x
2. Step 2: Convert to fraction form
   5,086.44/7,626.78 = 3,139.56/x
3. Step 3: Cross multiply
   5,086.44x = 7,626.78 × 3,139.56
4. Step 4: Simplify right side
   5,086.44x = 23,944,733.42
5. Step 5: Solve for x
   x = 23,944,733.42/5,086.44
6. Step 6: Final answer
   x = 4,707.56