Finding the Fourth Proportional to 12,825, 19,238.22 and 3,591.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,825 : 19,238.22 = 3,591.72 : x
2. Step 2: Convert to fraction form
   12,825/19,238.22 = 3,591.72/x
3. Step 3: Cross multiply
   12,825x = 19,238.22 × 3,591.72
4. Step 4: Simplify right side
   12,825x = 69,098,299.54
5. Step 5: Solve for x
   x = 69,098,299.54/12,825
6. Step 6: Final answer
   x = 5,387.78