Finding the Fourth Proportional to 3,712.16, 5,123.02 and 2,140.35

Step by Step Solution

1. Step 1: Write the proportion equation
   3,712.16 : 5,123.02 = 2,140.35 : x
2. Step 2: Convert to fraction form
   3,712.16/5,123.02 = 2,140.35/x
3. Step 3: Cross multiply
   3,712.16x = 5,123.02 × 2,140.35
4. Step 4: Simplify right side
   3,712.16x = 10,965,055.86
5. Step 5: Solve for x
   x = 10,965,055.86/3,712.16
6. Step 6: Final answer
   x = 2,953.82