Finding the Fourth Proportional to 12,404.25, 18,607.05 and 3,640.05

Step by Step Solution

1. Step 1: Write the proportion equation
   12,404.25 : 18,607.05 = 3,640.05 : x
2. Step 2: Convert to fraction form
   12,404.25/18,607.05 = 3,640.05/x
3. Step 3: Cross multiply
   12,404.25x = 18,607.05 × 3,640.05
4. Step 4: Simplify right side
   12,404.25x = 67,730,592.35
5. Step 5: Solve for x
   x = 67,730,592.35/12,404.25
6. Step 6: Final answer
   x = 5,460.27