Finding the Fourth Proportional to 13,401.22, 20,103.42 and 3,540.58

Step by Step Solution

1. Step 1: Write the proportion equation
   13,401.22 : 20,103.42 = 3,540.58 : x
2. Step 2: Convert to fraction form
   13,401.22/20,103.42 = 3,540.58/x
3. Step 3: Cross multiply
   13,401.22x = 20,103.42 × 3,540.58
4. Step 4: Simplify right side
   13,401.22x = 71,177,766.78
5. Step 5: Solve for x
   x = 71,177,766.78/13,401.22
6. Step 6: Final answer
   x = 5,311.29