Finding the Fourth Proportional to 16,243.78, 22,416.42 and 9,170.02

Step by Step Solution

1. Step 1: Write the proportion equation
   16,243.78 : 22,416.42 = 9,170.02 : x
2. Step 2: Convert to fraction form
   16,243.78/22,416.42 = 9,170.02/x
3. Step 3: Cross multiply
   16,243.78x = 22,416.42 × 9,170.02
4. Step 4: Simplify right side
   16,243.78x = 205,559,019.73
5. Step 5: Solve for x
   x = 205,559,019.73/16,243.78
6. Step 6: Final answer
   x = 12,654.63