Finding the Fourth Proportional to 10,171.81, 15,262.12 and 3,936.20

Step by Step Solution

1. Step 1: Write the proportion equation
   10,171.81 : 15,262.12 = 3,936.20 : x
2. Step 2: Convert to fraction form
   10,171.81/15,262.12 = 3,936.20/x
3. Step 3: Cross multiply
   10,171.81x = 15,262.12 × 3,936.20
4. Step 4: Simplify right side
   10,171.81x = 60,074,685.35
5. Step 5: Solve for x
   x = 60,074,685.35/10,171.81
6. Step 6: Final answer
   x = 5,906.00