Finding the Fourth Proportional to 22,209.30, 30,648.45 and 12,137.49

Step by Step Solution

1. Step 1: Write the proportion equation
   22,209.30 : 30,648.45 = 12,137.49 : x
2. Step 2: Convert to fraction form
   22,209.30/30,648.45 = 12,137.49/x
3. Step 3: Cross multiply
   22,209.30x = 30,648.45 × 12,137.49
4. Step 4: Simplify right side
   22,209.30x = 371,995,255.39
5. Step 5: Solve for x
   x = 371,995,255.39/22,209.30
6. Step 6: Final answer
   x = 16,749.53