Finding the Fourth Proportional to 22,674.42, 31,290.83 and 12,603.80

Step by Step Solution

1. Step 1: Write the proportion equation
   22,674.42 : 31,290.83 = 12,603.80 : x
2. Step 2: Convert to fraction form
   22,674.42/31,290.83 = 12,603.80/x
3. Step 3: Cross multiply
   22,674.42x = 31,290.83 × 12,603.80
4. Step 4: Simplify right side
   22,674.42x = 394,383,381.32
5. Step 5: Solve for x
   x = 394,383,381.32/22,674.42
6. Step 6: Final answer
   x = 17,393.31