Finding the Fourth Proportional to 8,216.31, 12,335.38 and 5,556.83

Step by Step Solution

1. Step 1: Write the proportion equation
   8,216.31 : 12,335.38 = 5,556.83 : x
2. Step 2: Convert to fraction form
   8,216.31/12,335.38 = 5,556.83/x
3. Step 3: Cross multiply
   8,216.31x = 12,335.38 × 5,556.83
4. Step 4: Simplify right side
   8,216.31x = 68,545,580.33
5. Step 5: Solve for x
   x = 68,545,580.33/8,216.31
6. Step 6: Final answer
   x = 8,342.63