Finding the Fourth Proportional to 3,712.17, 5,123.27 and 2,140.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,712.17 : 5,123.27 = 2,140.28 : x
2. Step 2: Convert to fraction form
   3,712.17/5,123.27 = 2,140.28/x
3. Step 3: Cross multiply
   3,712.17x = 5,123.27 × 2,140.28
4. Step 4: Simplify right side
   3,712.17x = 10,965,196.00
5. Step 5: Solve for x
   x = 10,965,196.00/3,712.17
6. Step 6: Final answer
   x = 2,953.85