Finding the Fourth Proportional to 3,673.69, 5,065.63 and 2,731.21

Step by Step Solution

1. Step 1: Write the proportion equation
   3,673.69 : 5,065.63 = 2,731.21 : x
2. Step 2: Convert to fraction form
   3,673.69/5,065.63 = 2,731.21/x
3. Step 3: Cross multiply
   3,673.69x = 5,065.63 × 2,731.21
4. Step 4: Simplify right side
   3,673.69x = 13,835,279.82
5. Step 5: Solve for x
   x = 13,835,279.82/3,673.69
6. Step 6: Final answer
   x = 3,766.05