Finding the Fourth Proportional to 8,632.95, 12,952.71 and 3,086.07

Step by Step Solution

1. Step 1: Write the proportion equation
   8,632.95 : 12,952.71 = 3,086.07 : x
2. Step 2: Convert to fraction form
   8,632.95/12,952.71 = 3,086.07/x
3. Step 3: Cross multiply
   8,632.95x = 12,952.71 × 3,086.07
4. Step 4: Simplify right side
   8,632.95x = 39,972,969.75
5. Step 5: Solve for x
   x = 39,972,969.75/8,632.95
6. Step 6: Final answer
   x = 4,630.28