Finding the Fourth Proportional to 21,966.52, 30,314.24 and 12,408.36

Step by Step Solution

1. Step 1: Write the proportion equation
   21,966.52 : 30,314.24 = 12,408.36 : x
2. Step 2: Convert to fraction form
   21,966.52/30,314.24 = 12,408.36/x
3. Step 3: Cross multiply
   21,966.52x = 30,314.24 × 12,408.36
4. Step 4: Simplify right side
   21,966.52x = 376,150,003.05
5. Step 5: Solve for x
   x = 376,150,003.05/21,966.52
6. Step 6: Final answer
   x = 17,123.79