Finding the Fourth Proportional to 22,676.18, 31,290.98 and 12,603.42

Step by Step Solution

1. Step 1: Write the proportion equation
   22,676.18 : 31,290.98 = 12,603.42 : x
2. Step 2: Convert to fraction form
   22,676.18/31,290.98 = 12,603.42/x
3. Step 3: Cross multiply
   22,676.18x = 31,290.98 × 12,603.42
4. Step 4: Simplify right side
   22,676.18x = 394,373,300.13
5. Step 5: Solve for x
   x = 394,373,300.13/22,676.18
6. Step 6: Final answer
   x = 17,391.53