Finding the Fourth Proportional to 16,170.16, 22,320.72 and 10,205.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,170.16 : 22,320.72 = 10,205.72 : x
2. Step 2: Convert to fraction form
   16,170.16/22,320.72 = 10,205.72/x
3. Step 3: Cross multiply
   16,170.16x = 22,320.72 × 10,205.72
4. Step 4: Simplify right side
   16,170.16x = 227,799,018.52
5. Step 5: Solve for x
   x = 227,799,018.52/16,170.16
6. Step 6: Final answer
   x = 14,087.62