Finding the Fourth Proportional to 11,940.24, 16,472.43 and 7,456.21

Step by Step Solution

1. Step 1: Write the proportion equation
   11,940.24 : 16,472.43 = 7,456.21 : x
2. Step 2: Convert to fraction form
   11,940.24/16,472.43 = 7,456.21/x
3. Step 3: Cross multiply
   11,940.24x = 16,472.43 × 7,456.21
4. Step 4: Simplify right side
   11,940.24x = 122,821,870.98
5. Step 5: Solve for x
   x = 122,821,870.98/11,940.24
6. Step 6: Final answer
   x = 10,286.38