Finding the Fourth Proportional to 10,689.03, 16,012.79 and 5,146.27

Step by Step Solution

1. Step 1: Write the proportion equation
   10,689.03 : 16,012.79 = 5,146.27 : x
2. Step 2: Convert to fraction form
   10,689.03/16,012.79 = 5,146.27/x
3. Step 3: Cross multiply
   10,689.03x = 16,012.79 × 5,146.27
4. Step 4: Simplify right side
   10,689.03x = 82,406,035.00
5. Step 5: Solve for x
   x = 82,406,035.00/10,689.03
6. Step 6: Final answer
   x = 7,709.40