Finding the Fourth Proportional to 10,863.52, 16,313.12 and 10,309.48

Step by Step Solution

1. Step 1: Write the proportion equation
   10,863.52 : 16,313.12 = 10,309.48 : x
2. Step 2: Convert to fraction form
   10,863.52/16,313.12 = 10,309.48/x
3. Step 3: Cross multiply
   10,863.52x = 16,313.12 × 10,309.48
4. Step 4: Simplify right side
   10,863.52x = 168,179,784.38
5. Step 5: Solve for x
   x = 168,179,784.38/10,863.52
6. Step 6: Final answer
   x = 15,481.15