Finding the Fourth Proportional to 12,233.20, 16,856.76 and 10,116.40

Step by Step Solution

1. Step 1: Write the proportion equation
   12,233.20 : 16,856.76 = 10,116.40 : x
2. Step 2: Convert to fraction form
   12,233.20/16,856.76 = 10,116.40/x
3. Step 3: Cross multiply
   12,233.20x = 16,856.76 × 10,116.40
4. Step 4: Simplify right side
   12,233.20x = 170,529,726.86
5. Step 5: Solve for x
   x = 170,529,726.86/12,233.20
6. Step 6: Final answer
   x = 13,939.91