Finding the Fourth Proportional to 22,453.72, 30,987.90 and 12,383.08

Step by Step Solution

1. Step 1: Write the proportion equation
   22,453.72 : 30,987.90 = 12,383.08 : x
2. Step 2: Convert to fraction form
   22,453.72/30,987.90 = 12,383.08/x
3. Step 3: Cross multiply
   22,453.72x = 30,987.90 × 12,383.08
4. Step 4: Simplify right side
   22,453.72x = 383,725,644.73
5. Step 5: Solve for x
   x = 383,725,644.73/22,453.72
6. Step 6: Final answer
   x = 17,089.62