Finding the Fourth Proportional to 8,156.22, 12,235.71 and 2,609.58

Step by Step Solution

1. Step 1: Write the proportion equation
   8,156.22 : 12,235.71 = 2,609.58 : x
2. Step 2: Convert to fraction form
   8,156.22/12,235.71 = 2,609.58/x
3. Step 3: Cross multiply
   8,156.22x = 12,235.71 × 2,609.58
4. Step 4: Simplify right side
   8,156.22x = 31,930,064.10
5. Step 5: Solve for x
   x = 31,930,064.10/8,156.22
6. Step 6: Final answer
   x = 3,914.81