Finding the Fourth Proportional to 8,626.38, 12,936.69 and 3,943.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,626.38 : 12,936.69 = 3,943.50 : x
2. Step 2: Convert to fraction form
   8,626.38/12,936.69 = 3,943.50/x
3. Step 3: Cross multiply
   8,626.38x = 12,936.69 × 3,943.50
4. Step 4: Simplify right side
   8,626.38x = 51,015,837.02
5. Step 5: Solve for x
   x = 51,015,837.02/8,626.38
6. Step 6: Final answer
   x = 5,913.93