Finding the Fourth Proportional to 16,245.97, 22,419.25 and 9,172.69

Step by Step Solution

1. Step 1: Write the proportion equation
   16,245.97 : 22,419.25 = 9,172.69 : x
2. Step 2: Convert to fraction form
   16,245.97/22,419.25 = 9,172.69/x
3. Step 3: Cross multiply
   16,245.97x = 22,419.25 × 9,172.69
4. Step 4: Simplify right side
   16,245.97x = 205,644,830.28
5. Step 5: Solve for x
   x = 205,644,830.28/16,245.97
6. Step 6: Final answer
   x = 12,658.21