Finding the Fourth Proportional to 12,270.42, 18,408.69 and 3,505.41

Step by Step Solution

1. Step 1: Write the proportion equation
   12,270.42 : 18,408.69 = 3,505.41 : x
2. Step 2: Convert to fraction form
   12,270.42/18,408.69 = 3,505.41/x
3. Step 3: Cross multiply
   12,270.42x = 18,408.69 × 3,505.41
4. Step 4: Simplify right side
   12,270.42x = 64,530,006.01
5. Step 5: Solve for x
   x = 64,530,006.01/12,270.42
6. Step 6: Final answer
   x = 5,258.99