Finding the Fourth Proportional to 12,401.38, 18,601.82 and 3,636.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,401.38 : 18,601.82 = 3,636.10 : x
2. Step 2: Convert to fraction form
   12,401.38/18,601.82 = 3,636.10/x
3. Step 3: Cross multiply
   12,401.38x = 18,601.82 × 3,636.10
4. Step 4: Simplify right side
   12,401.38x = 67,638,077.70
5. Step 5: Solve for x
   x = 67,638,077.70/12,401.38
6. Step 6: Final answer
   x = 5,454.08