Finding the Fourth Proportional to 12,404.75, 18,604.32 and 3,640.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,404.75 : 18,604.32 = 3,640.34 : x
2. Step 2: Convert to fraction form
   12,404.75/18,604.32 = 3,640.34/x
3. Step 3: Cross multiply
   12,404.75x = 18,604.32 × 3,640.34
4. Step 4: Simplify right side
   12,404.75x = 67,726,083.13
5. Step 5: Solve for x
   x = 67,726,083.13/12,404.75
6. Step 6: Final answer
   x = 5,459.69