Finding the Fourth Proportional to 9,395.99, 12,968.78 and 5,621.39

Step by Step Solution

1. Step 1: Write the proportion equation
   9,395.99 : 12,968.78 = 5,621.39 : x
2. Step 2: Convert to fraction form
   9,395.99/12,968.78 = 5,621.39/x
3. Step 3: Cross multiply
   9,395.99x = 12,968.78 × 5,621.39
4. Step 4: Simplify right side
   9,395.99x = 72,902,477.25
5. Step 5: Solve for x
   x = 72,902,477.25/9,395.99
6. Step 6: Final answer
   x = 7,758.90