Finding the Fourth Proportional to 9,396.77, 12,965.97 and 5,621.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,396.77 : 12,965.97 = 5,621.48 : x
2. Step 2: Convert to fraction form
   9,396.77/12,965.97 = 5,621.48/x
3. Step 3: Cross multiply
   9,396.77x = 12,965.97 × 5,621.48
4. Step 4: Simplify right side
   9,396.77x = 72,887,941.04
5. Step 5: Solve for x
   x = 72,887,941.04/9,396.77
6. Step 6: Final answer
   x = 7,756.70