Finding the Fourth Proportional to 14,100.72, 21,161.70 and 9,647.73

Step by Step Solution

1. Step 1: Write the proportion equation
   14,100.72 : 21,161.70 = 9,647.73 : x
2. Step 2: Convert to fraction form
   14,100.72/21,161.70 = 9,647.73/x
3. Step 3: Cross multiply
   14,100.72x = 21,161.70 × 9,647.73
4. Step 4: Simplify right side
   14,100.72x = 204,162,367.94
5. Step 5: Solve for x
   x = 204,162,367.94/14,100.72
6. Step 6: Final answer
   x = 14,478.86