Finding the Fourth Proportional to 22,266.69, 30,728.20 and 12,196.07

Step by Step Solution

1. Step 1: Write the proportion equation
   22,266.69 : 30,728.20 = 12,196.07 : x
2. Step 2: Convert to fraction form
   22,266.69/30,728.20 = 12,196.07/x
3. Step 3: Cross multiply
   22,266.69x = 30,728.20 × 12,196.07
4. Step 4: Simplify right side
   22,266.69x = 374,763,278.17
5. Step 5: Solve for x
   x = 374,763,278.17/22,266.69
6. Step 6: Final answer
   x = 16,830.67