Finding the Fourth Proportional to 3,947.10, 5,924.79 and 2,391

Step by Step Solution

1. Step 1: Write the proportion equation
   3,947.10 : 5,924.79 = 2,391 : x
2. Step 2: Convert to fraction form
   3,947.10/5,924.79 = 2,391/x
3. Step 3: Cross multiply
   3,947.10x = 5,924.79 × 2,391
4. Step 4: Simplify right side
   3,947.10x = 14,166,172.89
5. Step 5: Solve for x
   x = 14,166,172.89/3,947.10
6. Step 6: Final answer
   x = 3,589.01