Finding the Fourth Proportional to 12,591.10, 18,885.84 and 3,826.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,591.10 : 18,885.84 = 3,826.09 : x
2. Step 2: Convert to fraction form
   12,591.10/18,885.84 = 3,826.09/x
3. Step 3: Cross multiply
   12,591.10x = 18,885.84 × 3,826.09
4. Step 4: Simplify right side
   12,591.10x = 72,258,923.57
5. Step 5: Solve for x
   x = 72,258,923.57/12,591.10
6. Step 6: Final answer
   x = 5,738.89