Finding the Fourth Proportional to 12,807.09, 17,662.95 and 8,327.43

Step by Step Solution

1. Step 1: Write the proportion equation
   12,807.09 : 17,662.95 = 8,327.43 : x
2. Step 2: Convert to fraction form
   12,807.09/17,662.95 = 8,327.43/x
3. Step 3: Cross multiply
   12,807.09x = 17,662.95 × 8,327.43
4. Step 4: Simplify right side
   12,807.09x = 147,086,979.72
5. Step 5: Solve for x
   x = 147,086,979.72/12,807.09
6. Step 6: Final answer
   x = 11,484.81