Finding the Fourth Proportional to 16,642.72, 22,965.06 and 9,571.42

Step by Step Solution

1. Step 1: Write the proportion equation
   16,642.72 : 22,965.06 = 9,571.42 : x
2. Step 2: Convert to fraction form
   16,642.72/22,965.06 = 9,571.42/x
3. Step 3: Cross multiply
   16,642.72x = 22,965.06 × 9,571.42
4. Step 4: Simplify right side
   16,642.72x = 219,808,234.59
5. Step 5: Solve for x
   x = 219,808,234.59/16,642.72
6. Step 6: Final answer
   x = 13,207.47