Finding the Fourth Proportional to 8,632.72, 12,951.81 and 3,085.94

Step by Step Solution

1. Step 1: Write the proportion equation
   8,632.72 : 12,951.81 = 3,085.94 : x
2. Step 2: Convert to fraction form
   8,632.72/12,951.81 = 3,085.94/x
3. Step 3: Cross multiply
   8,632.72x = 12,951.81 × 3,085.94
4. Step 4: Simplify right side
   8,632.72x = 39,968,508.55
5. Step 5: Solve for x
   x = 39,968,508.55/8,632.72
6. Step 6: Final answer
   x = 4,629.89