Finding the Fourth Proportional to 3,669.30, 5,500.31 and 2,107.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,669.30 : 5,500.31 = 2,107.42 : x
2. Step 2: Convert to fraction form
   3,669.30/5,500.31 = 2,107.42/x
3. Step 3: Cross multiply
   3,669.30x = 5,500.31 × 2,107.42
4. Step 4: Simplify right side
   3,669.30x = 11,591,439.01
5. Step 5: Solve for x
   x = 11,591,439.01/3,669.30
6. Step 6: Final answer
   x = 3,159.03