Finding the Fourth Proportional to 21,757.78, 30,024.56 and 12,326.14

Step by Step Solution

1. Step 1: Write the proportion equation
   21,757.78 : 30,024.56 = 12,326.14 : x
2. Step 2: Convert to fraction form
   21,757.78/30,024.56 = 12,326.14/x
3. Step 3: Cross multiply
   21,757.78x = 30,024.56 × 12,326.14
4. Step 4: Simplify right side
   21,757.78x = 370,086,930.00
5. Step 5: Solve for x
   x = 370,086,930.00/21,757.78
6. Step 6: Final answer
   x = 17,009.41