Finding the Fourth Proportional to 9,238.71, 13,859.28 and 3,399.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,238.71 : 13,859.28 = 3,399.42 : x
2. Step 2: Convert to fraction form
   9,238.71/13,859.28 = 3,399.42/x
3. Step 3: Cross multiply
   9,238.71x = 13,859.28 × 3,399.42
4. Step 4: Simplify right side
   9,238.71x = 47,113,513.62
5. Step 5: Solve for x
   x = 47,113,513.62/9,238.71
6. Step 6: Final answer
   x = 5,099.58