Finding the Fourth Proportional to 3,721.32, 5,133.93 and 2,127.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,721.32 : 5,133.93 = 2,127.72 : x
2. Step 2: Convert to fraction form
   3,721.32/5,133.93 = 2,127.72/x
3. Step 3: Cross multiply
   3,721.32x = 5,133.93 × 2,127.72
4. Step 4: Simplify right side
   3,721.32x = 10,923,565.54
5. Step 5: Solve for x
   x = 10,923,565.54/3,721.32
6. Step 6: Final answer
   x = 2,935.40