Finding the Fourth Proportional to 16,644, 22,968.72 and 9,192.48

Step by Step Solution

1. Step 1: Write the proportion equation
   16,644 : 22,968.72 = 9,192.48 : x
2. Step 2: Convert to fraction form
   16,644/22,968.72 = 9,192.48/x
3. Step 3: Cross multiply
   16,644x = 22,968.72 × 9,192.48
4. Step 4: Simplify right side
   16,644x = 211,139,499.23
5. Step 5: Solve for x
   x = 211,139,499.23/16,644
6. Step 6: Final answer
   x = 12,685.62