Finding the Fourth Proportional to 21,976.56, 30,327.66 and 12,040.56

Step by Step Solution

1. Step 1: Write the proportion equation
   21,976.56 : 30,327.66 = 12,040.56 : x
2. Step 2: Convert to fraction form
   21,976.56/30,327.66 = 12,040.56/x
3. Step 3: Cross multiply
   21,976.56x = 30,327.66 × 12,040.56
4. Step 4: Simplify right side
   21,976.56x = 365,162,009.89
5. Step 5: Solve for x
   x = 365,162,009.89/21,976.56
6. Step 6: Final answer
   x = 16,615.98