Finding the Fourth Proportional to 8,100.43, 12,150.30 and 2,557.75

Step by Step Solution

1. Step 1: Write the proportion equation
   8,100.43 : 12,150.30 = 2,557.75 : x
2. Step 2: Convert to fraction form
   8,100.43/12,150.30 = 2,557.75/x
3. Step 3: Cross multiply
   8,100.43x = 12,150.30 × 2,557.75
4. Step 4: Simplify right side
   8,100.43x = 31,077,429.83
5. Step 5: Solve for x
   x = 31,077,429.83/8,100.43
6. Step 6: Final answer
   x = 3,836.52