Finding the Fourth Proportional to 10,801.86, 16,162.36 and 7,689.03

Step by Step Solution

1. Step 1: Write the proportion equation
   10,801.86 : 16,162.36 = 7,689.03 : x
2. Step 2: Convert to fraction form
   10,801.86/16,162.36 = 7,689.03/x
3. Step 3: Cross multiply
   10,801.86x = 16,162.36 × 7,689.03
4. Step 4: Simplify right side
   10,801.86x = 124,272,870.91
5. Step 5: Solve for x
   x = 124,272,870.91/10,801.86
6. Step 6: Final answer
   x = 11,504.77