Finding the Fourth Proportional to 21,976.16, 30,327.12 and 12,040.16

Step by Step Solution

1. Step 1: Write the proportion equation
   21,976.16 : 30,327.12 = 12,040.16 : x
2. Step 2: Convert to fraction form
   21,976.16/30,327.12 = 12,040.16/x
3. Step 3: Cross multiply
   21,976.16x = 30,327.12 × 12,040.16
4. Step 4: Simplify right side
   21,976.16x = 365,143,377.14
5. Step 5: Solve for x
   x = 365,143,377.14/21,976.16
6. Step 6: Final answer
   x = 16,615.43