Finding the Fourth Proportional to 3,684.42, 5,085.81 and 3,290.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,684.42 : 5,085.81 = 3,290.76 : x
2. Step 2: Convert to fraction form
   3,684.42/5,085.81 = 3,290.76/x
3. Step 3: Cross multiply
   3,684.42x = 5,085.81 × 3,290.76
4. Step 4: Simplify right side
   3,684.42x = 16,736,180.12
5. Step 5: Solve for x
   x = 16,736,180.12/3,684.42
6. Step 6: Final answer
   x = 4,542.42