Finding the Fourth Proportional to 3,700.07, 5,106.25 and 2,128.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,700.07 : 5,106.25 = 2,128.16 : x
2. Step 2: Convert to fraction form
   3,700.07/5,106.25 = 2,128.16/x
3. Step 3: Cross multiply
   3,700.07x = 5,106.25 × 2,128.16
4. Step 4: Simplify right side
   3,700.07x = 10,866,917
5. Step 5: Solve for x
   x = 10,866,917/3,700.07
6. Step 6: Final answer
   x = 2,936.95