Finding the Fourth Proportional to 10,568.42, 15,847.83 and 3,989.93

Step by Step Solution

1. Step 1: Write the proportion equation
   10,568.42 : 15,847.83 = 3,989.93 : x
2. Step 2: Convert to fraction form
   10,568.42/15,847.83 = 3,989.93/x
3. Step 3: Cross multiply
   10,568.42x = 15,847.83 × 3,989.93
4. Step 4: Simplify right side
   10,568.42x = 63,231,771.97
5. Step 5: Solve for x
   x = 63,231,771.97/10,568.42
6. Step 6: Final answer
   x = 5,983.09