Finding the Fourth Proportional to 11,739, 16,199.88 and 8,757.48

Step by Step Solution

1. Step 1: Write the proportion equation
   11,739 : 16,199.88 = 8,757.48 : x
2. Step 2: Convert to fraction form
   11,739/16,199.88 = 8,757.48/x
3. Step 3: Cross multiply
   11,739x = 16,199.88 × 8,757.48
4. Step 4: Simplify right side
   11,739x = 141,870,125.10
5. Step 5: Solve for x
   x = 141,870,125.10/11,739
6. Step 6: Final answer
   x = 12,085.37