Finding the Fourth Proportional to 22,176.78, 30,603.67 and 12,105.28

Step by Step Solution

1. Step 1: Write the proportion equation
   22,176.78 : 30,603.67 = 12,105.28 : x
2. Step 2: Convert to fraction form
   22,176.78/30,603.67 = 12,105.28/x
3. Step 3: Cross multiply
   22,176.78x = 30,603.67 × 12,105.28
4. Step 4: Simplify right side
   22,176.78x = 370,465,994.38
5. Step 5: Solve for x
   x = 370,465,994.38/22,176.78
6. Step 6: Final answer
   x = 16,705.13