Finding the Fourth Proportional to 8,123.46, 12,185.81 and 2,577.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,123.46 : 12,185.81 = 2,577.12 : x
2. Step 2: Convert to fraction form
   8,123.46/12,185.81 = 2,577.12/x
3. Step 3: Cross multiply
   8,123.46x = 12,185.81 × 2,577.12
4. Step 4: Simplify right side
   8,123.46x = 31,404,294.67
5. Step 5: Solve for x
   x = 31,404,294.67/8,123.46
6. Step 6: Final answer
   x = 3,865.88