Finding the Fourth Proportional to 11,934.72, 17,866.44 and 7,240.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,934.72 : 17,866.44 = 7,240.50 : x
2. Step 2: Convert to fraction form
   11,934.72/17,866.44 = 7,240.50/x
3. Step 3: Cross multiply
   11,934.72x = 17,866.44 × 7,240.50
4. Step 4: Simplify right side
   11,934.72x = 129,361,958.82
5. Step 5: Solve for x
   x = 129,361,958.82/11,934.72
6. Step 6: Final answer
   x = 10,839.13