Finding the Fourth Proportional to 9,399.16, 12,969.60 and 5,620.94

Step by Step Solution

1. Step 1: Write the proportion equation
   9,399.16 : 12,969.60 = 5,620.94 : x
2. Step 2: Convert to fraction form
   9,399.16/12,969.60 = 5,620.94/x
3. Step 3: Cross multiply
   9,399.16x = 12,969.60 × 5,620.94
4. Step 4: Simplify right side
   9,399.16x = 72,901,375.85
5. Step 5: Solve for x
   x = 72,901,375.85/9,399.16
6. Step 6: Final answer
   x = 7,756.16