Finding the Fourth Proportional to 3,907.24, 5,392.61 and 2,491.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,907.24 : 5,392.61 = 2,491.56 : x
2. Step 2: Convert to fraction form
   3,907.24/5,392.61 = 2,491.56/x
3. Step 3: Cross multiply
   3,907.24x = 5,392.61 × 2,491.56
4. Step 4: Simplify right side
   3,907.24x = 13,436,011.37
5. Step 5: Solve for x
   x = 13,436,011.37/3,907.24
6. Step 6: Final answer
   x = 3,438.75