Finding the Fourth Proportional to 5,143.59, 7,707.31 and 3,976.46

Step by Step Solution

1. Step 1: Write the proportion equation
   5,143.59 : 7,707.31 = 3,976.46 : x
2. Step 2: Convert to fraction form
   5,143.59/7,707.31 = 3,976.46/x
3. Step 3: Cross multiply
   5,143.59x = 7,707.31 × 3,976.46
4. Step 4: Simplify right side
   5,143.59x = 30,647,809.92
5. Step 5: Solve for x
   x = 30,647,809.92/5,143.59
6. Step 6: Final answer
   x = 5,958.45