Finding the Fourth Proportional to 21,954, 30,297.28 and 12,018

Step by Step Solution

1. Step 1: Write the proportion equation
   21,954 : 30,297.28 = 12,018 : x
2. Step 2: Convert to fraction form
   21,954/30,297.28 = 12,018/x
3. Step 3: Cross multiply
   21,954x = 30,297.28 × 12,018
4. Step 4: Simplify right side
   21,954x = 364,112,711.04
5. Step 5: Solve for x
   x = 364,112,711.04/21,954
6. Step 6: Final answer
   x = 16,585.26