Finding the Fourth Proportional to 12,002.32, 16,559.40 and 8,278.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,002.32 : 16,559.40 = 8,278.48 : x
2. Step 2: Convert to fraction form
   12,002.32/16,559.40 = 8,278.48/x
3. Step 3: Cross multiply
   12,002.32x = 16,559.40 × 8,278.48
4. Step 4: Simplify right side
   12,002.32x = 137,086,661.71
5. Step 5: Solve for x
   x = 137,086,661.71/12,002.32
6. Step 6: Final answer
   x = 11,421.68