Finding the Fourth Proportional to 22,175.78, 30,601.82 and 13,218.67

Step by Step Solution

1. Step 1: Write the proportion equation
   22,175.78 : 30,601.82 = 13,218.67 : x
2. Step 2: Convert to fraction form
   22,175.78/30,601.82 = 13,218.67/x
3. Step 3: Cross multiply
   22,175.78x = 30,601.82 × 13,218.67
4. Step 4: Simplify right side
   22,175.78x = 404,515,140.88
5. Step 5: Solve for x
   x = 404,515,140.88/22,175.78
6. Step 6: Final answer
   x = 18,241.30