Finding the Fourth Proportional to 8,103.58, 12,155.94 and 2,557.18

Step by Step Solution

1. Step 1: Write the proportion equation
   8,103.58 : 12,155.94 = 2,557.18 : x
2. Step 2: Convert to fraction form
   8,103.58/12,155.94 = 2,557.18/x
3. Step 3: Cross multiply
   8,103.58x = 12,155.94 × 2,557.18
4. Step 4: Simplify right side
   8,103.58x = 31,084,926.65
5. Step 5: Solve for x
   x = 31,084,926.65/8,103.58
6. Step 6: Final answer
   x = 3,835.95