Finding the Fourth Proportional to 11,993.36, 16,561.28 and 7,524.79

Step by Step Solution

1. Step 1: Write the proportion equation
   11,993.36 : 16,561.28 = 7,524.79 : x
2. Step 2: Convert to fraction form
   11,993.36/16,561.28 = 7,524.79/x
3. Step 3: Cross multiply
   11,993.36x = 16,561.28 × 7,524.79
4. Step 4: Simplify right side
   11,993.36x = 124,620,131.54
5. Step 5: Solve for x
   x = 124,620,131.54/11,993.36
6. Step 6: Final answer
   x = 10,390.76