Finding the Fourth Proportional to 12,774.24, 19,162.32 and 3,540

Step by Step Solution

1. Step 1: Write the proportion equation
   12,774.24 : 19,162.32 = 3,540 : x
2. Step 2: Convert to fraction form
   12,774.24/19,162.32 = 3,540/x
3. Step 3: Cross multiply
   12,774.24x = 19,162.32 × 3,540
4. Step 4: Simplify right side
   12,774.24x = 67,834,612.80
5. Step 5: Solve for x
   x = 67,834,612.80/12,774.24
6. Step 6: Final answer
   x = 5,310.27