Finding the Fourth Proportional to 3,681.37, 5,080.43 and 2,109.77

Step by Step Solution

1. Step 1: Write the proportion equation
   3,681.37 : 5,080.43 = 2,109.77 : x
2. Step 2: Convert to fraction form
   3,681.37/5,080.43 = 2,109.77/x
3. Step 3: Cross multiply
   3,681.37x = 5,080.43 × 2,109.77
4. Step 4: Simplify right side
   3,681.37x = 10,718,502.85
5. Step 5: Solve for x
   x = 10,718,502.85/3,681.37
6. Step 6: Final answer
   x = 2,911.55