Finding the Fourth Proportional to 8,629.72, 12,942.12 and 2,388.16

Step by Step Solution

1. Step 1: Write the proportion equation
   8,629.72 : 12,942.12 = 2,388.16 : x
2. Step 2: Convert to fraction form
   8,629.72/12,942.12 = 2,388.16/x
3. Step 3: Cross multiply
   8,629.72x = 12,942.12 × 2,388.16
4. Step 4: Simplify right side
   8,629.72x = 30,907,853.30
5. Step 5: Solve for x
   x = 30,907,853.30/8,629.72
6. Step 6: Final answer
   x = 3,581.56