Finding the Fourth Proportional to 3,765.51, 5,196.15 and 2,086.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,765.51 : 5,196.15 = 2,086.76 : x
2. Step 2: Convert to fraction form
   3,765.51/5,196.15 = 2,086.76/x
3. Step 3: Cross multiply
   3,765.51x = 5,196.15 × 2,086.76
4. Step 4: Simplify right side
   3,765.51x = 10,843,117.97
5. Step 5: Solve for x
   x = 10,843,117.97/3,765.51
6. Step 6: Final answer
   x = 2,879.59