Finding the Fourth Proportional to 10,238.36, 15,356.79 and 3,997.19

Step by Step Solution

1. Step 1: Write the proportion equation
   10,238.36 : 15,356.79 = 3,997.19 : x
2. Step 2: Convert to fraction form
   10,238.36/15,356.79 = 3,997.19/x
3. Step 3: Cross multiply
   10,238.36x = 15,356.79 × 3,997.19
4. Step 4: Simplify right side
   10,238.36x = 61,384,007.42
5. Step 5: Solve for x
   x = 61,384,007.42/10,238.36
6. Step 6: Final answer
   x = 5,995.49