Finding the Fourth Proportional to 3,912.83, 5,401.17 and 2,588.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,912.83 : 5,401.17 = 2,588.34 : x
2. Step 2: Convert to fraction form
   3,912.83/5,401.17 = 2,588.34/x
3. Step 3: Cross multiply
   3,912.83x = 5,401.17 × 2,588.34
4. Step 4: Simplify right side
   3,912.83x = 13,980,064.36
5. Step 5: Solve for x
   x = 13,980,064.36/3,912.83
6. Step 6: Final answer
   x = 3,572.88