Finding the Fourth Proportional to 9,399.88, 12,968.40 and 5,623.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,399.88 : 12,968.40 = 5,623.16 : x
2. Step 2: Convert to fraction form
   9,399.88/12,968.40 = 5,623.16/x
3. Step 3: Cross multiply
   9,399.88x = 12,968.40 × 5,623.16
4. Step 4: Simplify right side
   9,399.88x = 72,923,344.39
5. Step 5: Solve for x
   x = 72,923,344.39/9,399.88
6. Step 6: Final answer
   x = 7,757.90