Finding the Fourth Proportional to 13,040.82, 17,993.91 and 7,664.13

Step by Step Solution

1. Step 1: Write the proportion equation
   13,040.82 : 17,993.91 = 7,664.13 : x
2. Step 2: Convert to fraction form
   13,040.82/17,993.91 = 7,664.13/x
3. Step 3: Cross multiply
   13,040.82x = 17,993.91 × 7,664.13
4. Step 4: Simplify right side
   13,040.82x = 137,907,665.45
5. Step 5: Solve for x
   x = 137,907,665.45/13,040.82
6. Step 6: Final answer
   x = 10,575.08