Finding the Fourth Proportional to 9,238.28, 13,859.61 and 2,998.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,238.28 : 13,859.61 = 2,998.31 : x
2. Step 2: Convert to fraction form
   9,238.28/13,859.61 = 2,998.31/x
3. Step 3: Cross multiply
   9,238.28x = 13,859.61 × 2,998.31
4. Step 4: Simplify right side
   9,238.28x = 41,555,326.72
5. Step 5: Solve for x
   x = 41,555,326.72/9,238.28
6. Step 6: Final answer
   x = 4,498.17