Finding the Fourth Proportional to 10,863.48, 16,289.67 and 5,308.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,863.48 : 16,289.67 = 5,308.50 : x
2. Step 2: Convert to fraction form
   10,863.48/16,289.67 = 5,308.50/x
3. Step 3: Cross multiply
   10,863.48x = 16,289.67 × 5,308.50
4. Step 4: Simplify right side
   10,863.48x = 86,473,713.20
5. Step 5: Solve for x
   x = 86,473,713.20/10,863.48
6. Step 6: Final answer
   x = 7,960.04