Finding the Fourth Proportional to 3,680.37, 5,080.01 and 2,109.51

Step by Step Solution

1. Step 1: Write the proportion equation
   3,680.37 : 5,080.01 = 2,109.51 : x
2. Step 2: Convert to fraction form
   3,680.37/5,080.01 = 2,109.51/x
3. Step 3: Cross multiply
   3,680.37x = 5,080.01 × 2,109.51
4. Step 4: Simplify right side
   3,680.37x = 10,716,331.90
5. Step 5: Solve for x
   x = 10,716,331.90/3,680.37
6. Step 6: Final answer
   x = 2,911.75