Finding the Fourth Proportional to 11,513.99, 17,241.82 and 7,118.12

Step by Step Solution

1. Step 1: Write the proportion equation
   11,513.99 : 17,241.82 = 7,118.12 : x
2. Step 2: Convert to fraction form
   11,513.99/17,241.82 = 7,118.12/x
3. Step 3: Cross multiply
   11,513.99x = 17,241.82 × 7,118.12
4. Step 4: Simplify right side
   11,513.99x = 122,729,343.78
5. Step 5: Solve for x
   x = 122,729,343.78/11,513.99
6. Step 6: Final answer
   x = 10,659.15