Finding the Fourth Proportional to 12,401.87, 18,602.56 and 3,636.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,401.87 : 18,602.56 = 3,636.59 : x
2. Step 2: Convert to fraction form
   12,401.87/18,602.56 = 3,636.59/x
3. Step 3: Cross multiply
   12,401.87x = 18,602.56 × 3,636.59
4. Step 4: Simplify right side
   12,401.87x = 67,649,883.67
5. Step 5: Solve for x
   x = 67,649,883.67/12,401.87
6. Step 6: Final answer
   x = 5,454.81