Finding the Fourth Proportional to 8,123.40, 12,185.54 and 2,576.34

Step by Step Solution

1. Step 1: Write the proportion equation
   8,123.40 : 12,185.54 = 2,576.34 : x
2. Step 2: Convert to fraction form
   8,123.40/12,185.54 = 2,576.34/x
3. Step 3: Cross multiply
   8,123.40x = 12,185.54 × 2,576.34
4. Step 4: Simplify right side
   8,123.40x = 31,394,094.12
5. Step 5: Solve for x
   x = 31,394,094.12/8,123.40
6. Step 6: Final answer
   x = 3,864.65