Finding the Fourth Proportional to 3,700.16, 5,106.22 and 2,128.26

Step by Step Solution

1. Step 1: Write the proportion equation
   3,700.16 : 5,106.22 = 2,128.26 : x
2. Step 2: Convert to fraction form
   3,700.16/5,106.22 = 2,128.26/x
3. Step 3: Cross multiply
   3,700.16x = 5,106.22 × 2,128.26
4. Step 4: Simplify right side
   3,700.16x = 10,867,363.78
5. Step 5: Solve for x
   x = 10,867,363.78/3,700.16
6. Step 6: Final answer
   x = 2,937.00