Finding the Fourth Proportional to 8,216.50, 12,326.70 and 2,669.86

Step by Step Solution

1. Step 1: Write the proportion equation
   8,216.50 : 12,326.70 = 2,669.86 : x
2. Step 2: Convert to fraction form
   8,216.50/12,326.70 = 2,669.86/x
3. Step 3: Cross multiply
   8,216.50x = 12,326.70 × 2,669.86
4. Step 4: Simplify right side
   8,216.50x = 32,910,563.26
5. Step 5: Solve for x
   x = 32,910,563.26/8,216.50
6. Step 6: Final answer
   x = 4,005.42