Finding the Fourth Proportional to 11,899, 16,397.98 and 8,713.27

Step by Step Solution

1. Step 1: Write the proportion equation
   11,899 : 16,397.98 = 8,713.27 : x
2. Step 2: Convert to fraction form
   11,899/16,397.98 = 8,713.27/x
3. Step 3: Cross multiply
   11,899x = 16,397.98 × 8,713.27
4. Step 4: Simplify right side
   11,899x = 142,880,027.19
5. Step 5: Solve for x
   x = 142,880,027.19/11,899
6. Step 6: Final answer
   x = 12,007.73