Finding the Fourth Proportional to 16,287, 22,476.06 and 9,213.27

Step by Step Solution

1. Step 1: Write the proportion equation
   16,287 : 22,476.06 = 9,213.27 : x
2. Step 2: Convert to fraction form
   16,287/22,476.06 = 9,213.27/x
3. Step 3: Cross multiply
   16,287x = 22,476.06 × 9,213.27
4. Step 4: Simplify right side
   16,287x = 207,078,009.32
5. Step 5: Solve for x
   x = 207,078,009.32/16,287
6. Step 6: Final answer
   x = 12,714.31