Finding the Fourth Proportional to 3,818.50, 5,269.73 and 2,139.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,818.50 : 5,269.73 = 2,139.82 : x
2. Step 2: Convert to fraction form
   3,818.50/5,269.73 = 2,139.82/x
3. Step 3: Cross multiply
   3,818.50x = 5,269.73 × 2,139.82
4. Step 4: Simplify right side
   3,818.50x = 11,276,249.78
5. Step 5: Solve for x
   x = 11,276,249.78/3,818.50
6. Step 6: Final answer
   x = 2,953.06