Finding the Fourth Proportional to 3,877.38, 5,350.76 and 2,109.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,877.38 : 5,350.76 = 2,109.06 : x
2. Step 2: Convert to fraction form
   3,877.38/5,350.76 = 2,109.06/x
3. Step 3: Cross multiply
   3,877.38x = 5,350.76 × 2,109.06
4. Step 4: Simplify right side
   3,877.38x = 11,285,073.89
5. Step 5: Solve for x
   x = 11,285,073.89/3,877.38
6. Step 6: Final answer
   x = 2,910.49