Finding the Fourth Proportional to 11,227.72, 16,856.16 and 8,632.48

Step by Step Solution

1. Step 1: Write the proportion equation
   11,227.72 : 16,856.16 = 8,632.48 : x
2. Step 2: Convert to fraction form
   11,227.72/16,856.16 = 8,632.48/x
3. Step 3: Cross multiply
   11,227.72x = 16,856.16 × 8,632.48
4. Step 4: Simplify right side
   11,227.72x = 145,510,464.08
5. Step 5: Solve for x
   x = 145,510,464.08/11,227.72
6. Step 6: Final answer
   x = 12,959.93