Finding the Fourth Proportional to 16,245.54, 22,418.46 and 9,171.39

Step by Step Solution

1. Step 1: Write the proportion equation
   16,245.54 : 22,418.46 = 9,171.39 : x
2. Step 2: Convert to fraction form
   16,245.54/22,418.46 = 9,171.39/x
3. Step 3: Cross multiply
   16,245.54x = 22,418.46 × 9,171.39
4. Step 4: Simplify right side
   16,245.54x = 205,608,439.86
5. Step 5: Solve for x
   x = 205,608,439.86/16,245.54
6. Step 6: Final answer
   x = 12,656.30