Finding the Fourth Proportional to 12,078.58, 16,660.76 and 8,726.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,078.58 : 16,660.76 = 8,726.32 : x
2. Step 2: Convert to fraction form
   12,078.58/16,660.76 = 8,726.32/x
3. Step 3: Cross multiply
   12,078.58x = 16,660.76 × 8,726.32
4. Step 4: Simplify right side
   12,078.58x = 145,387,123.20
5. Step 5: Solve for x
   x = 145,387,123.20/12,078.58
6. Step 6: Final answer
   x = 12,036.77