Finding the Fourth Proportional to 12,269.61, 18,408.02 and 3,949.45

Step by Step Solution

1. Step 1: Write the proportion equation
   12,269.61 : 18,408.02 = 3,949.45 : x
2. Step 2: Convert to fraction form
   12,269.61/18,408.02 = 3,949.45/x
3. Step 3: Cross multiply
   12,269.61x = 18,408.02 × 3,949.45
4. Step 4: Simplify right side
   12,269.61x = 72,701,488.82
5. Step 5: Solve for x
   x = 72,701,488.82/12,269.61
6. Step 6: Final answer
   x = 5,925.33