Finding the Fourth Proportional to 3,900.23, 5,382.69 and 2,132.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,900.23 : 5,382.69 = 2,132.10 : x
2. Step 2: Convert to fraction form
   3,900.23/5,382.69 = 2,132.10/x
3. Step 3: Cross multiply
   3,900.23x = 5,382.69 × 2,132.10
4. Step 4: Simplify right side
   3,900.23x = 11,476,425.35
5. Step 5: Solve for x
   x = 11,476,425.35/3,900.23
6. Step 6: Final answer
   x = 2,942.50