Finding the Fourth Proportional to 11,711.39, 16,168.40 and 7,744.01

Step by Step Solution

1. Step 1: Write the proportion equation
   11,711.39 : 16,168.40 = 7,744.01 : x
2. Step 2: Convert to fraction form
   11,711.39/16,168.40 = 7,744.01/x
3. Step 3: Cross multiply
   11,711.39x = 16,168.40 × 7,744.01
4. Step 4: Simplify right side
   11,711.39x = 125,208,131.72
5. Step 5: Solve for x
   x = 125,208,131.72/11,711.39
6. Step 6: Final answer
   x = 10,691.15