Finding the Fourth Proportional to 3,700.18, 5,106.23 and 2,128.27

Step by Step Solution

1. Step 1: Write the proportion equation
   3,700.18 : 5,106.23 = 2,128.27 : x
2. Step 2: Convert to fraction form
   3,700.18/5,106.23 = 2,128.27/x
3. Step 3: Cross multiply
   3,700.18x = 5,106.23 × 2,128.27
4. Step 4: Simplify right side
   3,700.18x = 10,867,428.68
5. Step 5: Solve for x
   x = 10,867,428.68/3,700.18
6. Step 6: Final answer
   x = 2,937.00