Finding the Fourth Proportional to 3,786.82, 5,225.76 and 2,108.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,786.82 : 5,225.76 = 2,108.18 : x
2. Step 2: Convert to fraction form
   3,786.82/5,225.76 = 2,108.18/x
3. Step 3: Cross multiply
   3,786.82x = 5,225.76 × 2,108.18
4. Step 4: Simplify right side
   3,786.82x = 11,016,842.72
5. Step 5: Solve for x
   x = 11,016,842.72/3,786.82
6. Step 6: Final answer
   x = 2,909.26