Finding the Fourth Proportional to 5,429.70, 8,146.98 and 3,976.56

Step by Step Solution

1. Step 1: Write the proportion equation
   5,429.70 : 8,146.98 = 3,976.56 : x
2. Step 2: Convert to fraction form
   5,429.70/8,146.98 = 3,976.56/x
3. Step 3: Cross multiply
   5,429.70x = 8,146.98 × 3,976.56
4. Step 4: Simplify right side
   5,429.70x = 32,396,954.79
5. Step 5: Solve for x
   x = 32,396,954.79/5,429.70
6. Step 6: Final answer
   x = 5,966.62