Finding the Fourth Proportional to 16,144.20, 22,278.71 and 9,856.57

Step by Step Solution

1. Step 1: Write the proportion equation
   16,144.20 : 22,278.71 = 9,856.57 : x
2. Step 2: Convert to fraction form
   16,144.20/22,278.71 = 9,856.57/x
3. Step 3: Cross multiply
   16,144.20x = 22,278.71 × 9,856.57
4. Step 4: Simplify right side
   16,144.20x = 219,591,664.62
5. Step 5: Solve for x
   x = 219,591,664.62/16,144.20
6. Step 6: Final answer
   x = 13,601.89