Finding the Fourth Proportional to 9,397.40, 12,968.91 and 5,418.68

Step by Step Solution

1. Step 1: Write the proportion equation
   9,397.40 : 12,968.91 = 5,418.68 : x
2. Step 2: Convert to fraction form
   9,397.40/12,968.91 = 5,418.68/x
3. Step 3: Cross multiply
   9,397.40x = 12,968.91 × 5,418.68
4. Step 4: Simplify right side
   9,397.40x = 70,274,308.39
5. Step 5: Solve for x
   x = 70,274,308.39/9,397.40
6. Step 6: Final answer
   x = 7,478.06