Finding the Fourth Proportional to 10,716.40, 16,078.83 and 3,321.43

Step by Step Solution

1. Step 1: Write the proportion equation
   10,716.40 : 16,078.83 = 3,321.43 : x
2. Step 2: Convert to fraction form
   10,716.40/16,078.83 = 3,321.43/x
3. Step 3: Cross multiply
   10,716.40x = 16,078.83 × 3,321.43
4. Step 4: Simplify right side
   10,716.40x = 53,404,708.33
5. Step 5: Solve for x
   x = 53,404,708.33/10,716.40
6. Step 6: Final answer
   x = 4,983.46