Finding the Fourth Proportional to 3,840.57, 5,300.24 and 2,162.13

Step by Step Solution

1. Step 1: Write the proportion equation
   3,840.57 : 5,300.24 = 2,162.13 : x
2. Step 2: Convert to fraction form
   3,840.57/5,300.24 = 2,162.13/x
3. Step 3: Cross multiply
   3,840.57x = 5,300.24 × 2,162.13
4. Step 4: Simplify right side
   3,840.57x = 11,459,807.91
5. Step 5: Solve for x
   x = 11,459,807.91/3,840.57
6. Step 6: Final answer
   x = 2,983.88