Finding the Fourth Proportional to 12,238.69, 18,354.09 and 3,471.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,238.69 : 18,354.09 = 3,471.25 : x
2. Step 2: Convert to fraction form
   12,238.69/18,354.09 = 3,471.25/x
3. Step 3: Cross multiply
   12,238.69x = 18,354.09 × 3,471.25
4. Step 4: Simplify right side
   12,238.69x = 63,711,634.91
5. Step 5: Solve for x
   x = 63,711,634.91/12,238.69
6. Step 6: Final answer
   x = 5,205.76