Finding the Fourth Proportional to 11,681, 16,121.27 and 7,710.38

Step by Step Solution

1. Step 1: Write the proportion equation
   11,681 : 16,121.27 = 7,710.38 : x
2. Step 2: Convert to fraction form
   11,681/16,121.27 = 7,710.38/x
3. Step 3: Cross multiply
   11,681x = 16,121.27 × 7,710.38
4. Step 4: Simplify right side
   11,681x = 124,301,117.78
5. Step 5: Solve for x
   x = 124,301,117.78/11,681
6. Step 6: Final answer
   x = 10,641.31