Finding the Fourth Proportional to 3,700.04, 5,105.92 and 2,128.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,700.04 : 5,105.92 = 2,128.12 : x
2. Step 2: Convert to fraction form
   3,700.04/5,105.92 = 2,128.12/x
3. Step 3: Cross multiply
   3,700.04x = 5,105.92 × 2,128.12
4. Step 4: Simplify right side
   3,700.04x = 10,866,010.47
5. Step 5: Solve for x
   x = 10,866,010.47/3,700.04
6. Step 6: Final answer
   x = 2,936.73