Finding the Fourth Proportional to 3,710.43, 5,118.93 and 2,138.22

Step by Step Solution

1. Step 1: Write the proportion equation
   3,710.43 : 5,118.93 = 2,138.22 : x
2. Step 2: Convert to fraction form
   3,710.43/5,118.93 = 2,138.22/x
3. Step 3: Cross multiply
   3,710.43x = 5,118.93 × 2,138.22
4. Step 4: Simplify right side
   3,710.43x = 10,945,398.50
5. Step 5: Solve for x
   x = 10,945,398.50/3,710.43
6. Step 6: Final answer
   x = 2,949.90