Finding the Fourth Proportional to 3,705.48, 5,112.72 and 2,133.24

Step by Step Solution

1. Step 1: Write the proportion equation
   3,705.48 : 5,112.72 = 2,133.24 : x
2. Step 2: Convert to fraction form
   3,705.48/5,112.72 = 2,133.24/x
3. Step 3: Cross multiply
   3,705.48x = 5,112.72 × 2,133.24
4. Step 4: Simplify right side
   3,705.48x = 10,906,658.81
5. Step 5: Solve for x
   x = 10,906,658.81/3,705.48
6. Step 6: Final answer
   x = 2,943.39