Finding the Fourth Proportional to 8,549.48, 12,825.54 and 3,620.43

Step by Step Solution

1. Step 1: Write the proportion equation
   8,549.48 : 12,825.54 = 3,620.43 : x
2. Step 2: Convert to fraction form
   8,549.48/12,825.54 = 3,620.43/x
3. Step 3: Cross multiply
   8,549.48x = 12,825.54 × 3,620.43
4. Step 4: Simplify right side
   8,549.48x = 46,433,969.78
5. Step 5: Solve for x
   x = 46,433,969.78/8,549.48
6. Step 6: Final answer
   x = 5,431.20