Finding the Fourth Proportional to 3,780.27, 5,216.31 and 2,101.23

Step by Step Solution

1. Step 1: Write the proportion equation
   3,780.27 : 5,216.31 = 2,101.23 : x
2. Step 2: Convert to fraction form
   3,780.27/5,216.31 = 2,101.23/x
3. Step 3: Cross multiply
   3,780.27x = 5,216.31 × 2,101.23
4. Step 4: Simplify right side
   3,780.27x = 10,960,667.06
5. Step 5: Solve for x
   x = 10,960,667.06/3,780.27
6. Step 6: Final answer
   x = 2,899.44