Finding the Fourth Proportional to 12,496.56, 17,244.90 and 7,187.64

Step by Step Solution

1. Step 1: Write the proportion equation
   12,496.56 : 17,244.90 = 7,187.64 : x
2. Step 2: Convert to fraction form
   12,496.56/17,244.90 = 7,187.64/x
3. Step 3: Cross multiply
   12,496.56x = 17,244.90 × 7,187.64
4. Step 4: Simplify right side
   12,496.56x = 123,950,133.04
5. Step 5: Solve for x
   x = 123,950,133.04/12,496.56
6. Step 6: Final answer
   x = 9,918.74