Finding the Fourth Proportional to 22,361.54, 30,859.67 and 12,290.34

Step by Step Solution

1. Step 1: Write the proportion equation
   22,361.54 : 30,859.67 = 12,290.34 : x
2. Step 2: Convert to fraction form
   22,361.54/30,859.67 = 12,290.34/x
3. Step 3: Cross multiply
   22,361.54x = 30,859.67 × 12,290.34
4. Step 4: Simplify right side
   22,361.54x = 379,275,836.59
5. Step 5: Solve for x
   x = 379,275,836.59/22,361.54
6. Step 6: Final answer
   x = 16,961.08