Finding the Fourth Proportional to 10,863, 16,287.03 and 4,289.94

Step by Step Solution

1. Step 1: Write the proportion equation
   10,863 : 16,287.03 = 4,289.94 : x
2. Step 2: Convert to fraction form
   10,863/16,287.03 = 4,289.94/x
3. Step 3: Cross multiply
   10,863x = 16,287.03 × 4,289.94
4. Step 4: Simplify right side
   10,863x = 69,870,381.48
5. Step 5: Solve for x
   x = 69,870,381.48/10,863
6. Step 6: Final answer
   x = 6,431.96