Finding the Fourth Proportional to 8,156.30, 12,231.81 and 2,311.34

Step by Step Solution

1. Step 1: Write the proportion equation
   8,156.30 : 12,231.81 = 2,311.34 : x
2. Step 2: Convert to fraction form
   8,156.30/12,231.81 = 2,311.34/x
3. Step 3: Cross multiply
   8,156.30x = 12,231.81 × 2,311.34
4. Step 4: Simplify right side
   8,156.30x = 28,271,810.57
5. Step 5: Solve for x
   x = 28,271,810.57/8,156.30
6. Step 6: Final answer
   x = 3,466.26