Finding the Fourth Proportional to 3,643.28, 5,026.32 and 2,150.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,643.28 : 5,026.32 = 2,150.12 : x
2. Step 2: Convert to fraction form
   3,643.28/5,026.32 = 2,150.12/x
3. Step 3: Cross multiply
   3,643.28x = 5,026.32 × 2,150.12
4. Step 4: Simplify right side
   3,643.28x = 10,807,191.16
5. Step 5: Solve for x
   x = 10,807,191.16/3,643.28
6. Step 6: Final answer
   x = 2,966.34