Finding the Fourth Proportional to 13,217.82, 18,240.55 and 7,554.33

Step by Step Solution

1. Step 1: Write the proportion equation
   13,217.82 : 18,240.55 = 7,554.33 : x
2. Step 2: Convert to fraction form
   13,217.82/18,240.55 = 7,554.33/x
3. Step 3: Cross multiply
   13,217.82x = 18,240.55 × 7,554.33
4. Step 4: Simplify right side
   13,217.82x = 137,795,042.88
5. Step 5: Solve for x
   x = 137,795,042.88/13,217.82
6. Step 6: Final answer
   x = 10,424.94