Finding the Fourth Proportional to 9,708.73, 13,397.57 and 5,518.33

Step by Step Solution

1. Step 1: Write the proportion equation
   9,708.73 : 13,397.57 = 5,518.33 : x
2. Step 2: Convert to fraction form
   9,708.73/13,397.57 = 5,518.33/x
3. Step 3: Cross multiply
   9,708.73x = 13,397.57 × 5,518.33
4. Step 4: Simplify right side
   9,708.73x = 73,932,172.07
5. Step 5: Solve for x
   x = 73,932,172.07/9,708.73
6. Step 6: Final answer
   x = 7,615.02