Finding the Fourth Proportional to 8,118.71, 12,188.77 and 8,025.30

Step by Step Solution

1. Step 1: Write the proportion equation
   8,118.71 : 12,188.77 = 8,025.30 : x
2. Step 2: Convert to fraction form
   8,118.71/12,188.77 = 8,025.30/x
3. Step 3: Cross multiply
   8,118.71x = 12,188.77 × 8,025.30
4. Step 4: Simplify right side
   8,118.71x = 97,818,561.53
5. Step 5: Solve for x
   x = 97,818,561.53/8,118.71
6. Step 6: Final answer
   x = 12,048.54