Finding the Fourth Proportional to 22,267.76, 30,729.47 and 12,196.20

Step by Step Solution

1. Step 1: Write the proportion equation
   22,267.76 : 30,729.47 = 12,196.20 : x
2. Step 2: Convert to fraction form
   22,267.76/30,729.47 = 12,196.20/x
3. Step 3: Cross multiply
   22,267.76x = 30,729.47 × 12,196.20
4. Step 4: Simplify right side
   22,267.76x = 374,782,816.27
5. Step 5: Solve for x
   x = 374,782,816.27/22,267.76
6. Step 6: Final answer
   x = 16,830.74