Finding the Fourth Proportional to 8,123.42, 12,185.56 and 2,577.36

Step by Step Solution

1. Step 1: Write the proportion equation
   8,123.42 : 12,185.56 = 2,577.36 : x
2. Step 2: Convert to fraction form
   8,123.42/12,185.56 = 2,577.36/x
3. Step 3: Cross multiply
   8,123.42x = 12,185.56 × 2,577.36
4. Step 4: Simplify right side
   8,123.42x = 31,406,574.92
5. Step 5: Solve for x
   x = 31,406,574.92/8,123.42
6. Step 6: Final answer
   x = 3,866.18