Finding the Fourth Proportional to 16,470, 22,728.60 and 9,018

Step by Step Solution

1. Step 1: Write the proportion equation
   16,470 : 22,728.60 = 9,018 : x
2. Step 2: Convert to fraction form
   16,470/22,728.60 = 9,018/x
3. Step 3: Cross multiply
   16,470x = 22,728.60 × 9,018
4. Step 4: Simplify right side
   16,470x = 204,966,514.80
5. Step 5: Solve for x
   x = 204,966,514.80/16,470
6. Step 6: Final answer
   x = 12,444.84