Finding the Fourth Proportional to 3,868.91, 5,338.91 and 2,100.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,868.91 : 5,338.91 = 2,100.52 : x
2. Step 2: Convert to fraction form
   3,868.91/5,338.91 = 2,100.52/x
3. Step 3: Cross multiply
   3,868.91x = 5,338.91 × 2,100.52
4. Step 4: Simplify right side
   3,868.91x = 11,214,487.23
5. Step 5: Solve for x
   x = 11,214,487.23/3,868.91
6. Step 6: Final answer
   x = 2,898.62