Finding the Fourth Proportional to 8,126.01, 12,181.72 and 2,857.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,126.01 : 12,181.72 = 2,857.31 : x
2. Step 2: Convert to fraction form
   8,126.01/12,181.72 = 2,857.31/x
3. Step 3: Cross multiply
   8,126.01x = 12,181.72 × 2,857.31
4. Step 4: Simplify right side
   8,126.01x = 34,806,950.37
5. Step 5: Solve for x
   x = 34,806,950.37/8,126.01
6. Step 6: Final answer
   x = 4,283.40