Finding the Fourth Proportional to 5,530.94, 7,629.72 and 3,640.55

Step by Step Solution

1. Step 1: Write the proportion equation
   5,530.94 : 7,629.72 = 3,640.55 : x
2. Step 2: Convert to fraction form
   5,530.94/7,629.72 = 3,640.55/x
3. Step 3: Cross multiply
   5,530.94x = 7,629.72 × 3,640.55
4. Step 4: Simplify right side
   5,530.94x = 27,776,377.15
5. Step 5: Solve for x
   x = 27,776,377.15/5,530.94
6. Step 6: Final answer
   x = 5,022.00