Finding the Fourth Proportional to 12,436.21, 17,161.57 and 7,399.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,436.21 : 17,161.57 = 7,399.27 : x
2. Step 2: Convert to fraction form
   12,436.21/17,161.57 = 7,399.27/x
3. Step 3: Cross multiply
   12,436.21x = 17,161.57 × 7,399.27
4. Step 4: Simplify right side
   12,436.21x = 126,983,169.02
5. Step 5: Solve for x
   x = 126,983,169.02/12,436.21
6. Step 6: Final answer
   x = 10,210.76