Finding the Fourth Proportional to 22,142.42, 30,554.33 and 12,450.85

Step by Step Solution

1. Step 1: Write the proportion equation
   22,142.42 : 30,554.33 = 12,450.85 : x
2. Step 2: Convert to fraction form
   22,142.42/30,554.33 = 12,450.85/x
3. Step 3: Cross multiply
   22,142.42x = 30,554.33 × 12,450.85
4. Step 4: Simplify right side
   22,142.42x = 380,427,241.04
5. Step 5: Solve for x
   x = 380,427,241.04/22,142.42
6. Step 6: Final answer
   x = 17,180.92