Finding the Fourth Proportional to 16,224.31, 22,389.55 and 8,772.31

Step by Step Solution

1. Step 1: Write the proportion equation
   16,224.31 : 22,389.55 = 8,772.31 : x
2. Step 2: Convert to fraction form
   16,224.31/22,389.55 = 8,772.31/x
3. Step 3: Cross multiply
   16,224.31x = 22,389.55 × 8,772.31
4. Step 4: Simplify right side
   16,224.31x = 196,408,073.36
5. Step 5: Solve for x
   x = 196,408,073.36/16,224.31
6. Step 6: Final answer
   x = 12,105.79