Finding the Fourth Proportional to 13,216.57, 19,827.79 and 3,856.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,216.57 : 19,827.79 = 3,856.82 : x
2. Step 2: Convert to fraction form
   13,216.57/19,827.79 = 3,856.82/x
3. Step 3: Cross multiply
   13,216.57x = 19,827.79 × 3,856.82
4. Step 4: Simplify right side
   13,216.57x = 76,472,108.25
5. Step 5: Solve for x
   x = 76,472,108.25/13,216.57
6. Step 6: Final answer
   x = 5,786.08