Finding the Fourth Proportional to 8,662.42, 12,904.23 and 8,124.58

Step by Step Solution

1. Step 1: Write the proportion equation
   8,662.42 : 12,904.23 = 8,124.58 : x
2. Step 2: Convert to fraction form
   8,662.42/12,904.23 = 8,124.58/x
3. Step 3: Cross multiply
   8,662.42x = 12,904.23 × 8,124.58
4. Step 4: Simplify right side
   8,662.42x = 104,841,416.71
5. Step 5: Solve for x
   x = 104,841,416.71/8,662.42
6. Step 6: Final answer
   x = 12,103.02