Finding the Fourth Proportional to 11,489.82, 17,231.13 and 7,614.78

Step by Step Solution

1. Step 1: Write the proportion equation
   11,489.82 : 17,231.13 = 7,614.78 : x
2. Step 2: Convert to fraction form
   11,489.82/17,231.13 = 7,614.78/x
3. Step 3: Cross multiply
   11,489.82x = 17,231.13 × 7,614.78
4. Step 4: Simplify right side
   11,489.82x = 131,211,264.10
5. Step 5: Solve for x
   x = 131,211,264.10/11,489.82
6. Step 6: Final answer
   x = 11,419.78