Finding the Fourth Proportional to 3,902.01, 5,384.88 and 2,133.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,902.01 : 5,384.88 = 2,133.72 : x
2. Step 2: Convert to fraction form
   3,902.01/5,384.88 = 2,133.72/x
3. Step 3: Cross multiply
   3,902.01x = 5,384.88 × 2,133.72
4. Step 4: Simplify right side
   3,902.01x = 11,489,826.15
5. Step 5: Solve for x
   x = 11,489,826.15/3,902.01
6. Step 6: Final answer
   x = 2,944.59