Finding the Fourth Proportional to 12,711.21, 19,066.71 and 3,826.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,711.21 : 19,066.71 = 3,826.50 : x
2. Step 2: Convert to fraction form
   12,711.21/19,066.71 = 3,826.50/x
3. Step 3: Cross multiply
   12,711.21x = 19,066.71 × 3,826.50
4. Step 4: Simplify right side
   12,711.21x = 72,958,765.82
5. Step 5: Solve for x
   x = 72,958,765.82/12,711.21
6. Step 6: Final answer
   x = 5,739.72