Finding the Fourth Proportional to 12,401.49, 18,602.34 and 3,636.55

Step by Step Solution

1. Step 1: Write the proportion equation
   12,401.49 : 18,602.34 = 3,636.55 : x
2. Step 2: Convert to fraction form
   12,401.49/18,602.34 = 3,636.55/x
3. Step 3: Cross multiply
   12,401.49x = 18,602.34 × 3,636.55
4. Step 4: Simplify right side
   12,401.49x = 67,648,339.53
5. Step 5: Solve for x
   x = 67,648,339.53/12,401.49
6. Step 6: Final answer
   x = 5,454.86