Finding the Fourth Proportional to 3,902.72, 5,856.32 and 2,343.20

Step by Step Solution

1. Step 1: Write the proportion equation
   3,902.72 : 5,856.32 = 2,343.20 : x
2. Step 2: Convert to fraction form
   3,902.72/5,856.32 = 2,343.20/x
3. Step 3: Cross multiply
   3,902.72x = 5,856.32 × 2,343.20
4. Step 4: Simplify right side
   3,902.72x = 13,722,529.02
5. Step 5: Solve for x
   x = 13,722,529.02/3,902.72
6. Step 6: Final answer
   x = 3,516.14