Finding the Fourth Proportional to 3,674.79, 5,075.23 and 3,200.49

Step by Step Solution

1. Step 1: Write the proportion equation
   3,674.79 : 5,075.23 = 3,200.49 : x
2. Step 2: Convert to fraction form
   3,674.79/5,075.23 = 3,200.49/x
3. Step 3: Cross multiply
   3,674.79x = 5,075.23 × 3,200.49
4. Step 4: Simplify right side
   3,674.79x = 16,243,222.86
5. Step 5: Solve for x
   x = 16,243,222.86/3,674.79
6. Step 6: Final answer
   x = 4,420.18