Finding the Fourth Proportional to 3,917.09, 5,871.72 and 2,826.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,917.09 : 5,871.72 = 2,826.56 : x
2. Step 2: Convert to fraction form
   3,917.09/5,871.72 = 2,826.56/x
3. Step 3: Cross multiply
   3,917.09x = 5,871.72 × 2,826.56
4. Step 4: Simplify right side
   3,917.09x = 16,596,768.88
5. Step 5: Solve for x
   x = 16,596,768.88/3,917.09
6. Step 6: Final answer
   x = 4,237.01