Finding the Fourth Proportional to 10,525.49, 14,518.87 and 7,689.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,525.49 : 14,518.87 = 7,689.40 : x
2. Step 2: Convert to fraction form
   10,525.49/14,518.87 = 7,689.40/x
3. Step 3: Cross multiply
   10,525.49x = 14,518.87 × 7,689.40
4. Step 4: Simplify right side
   10,525.49x = 111,641,287.94
5. Step 5: Solve for x
   x = 111,641,287.94/10,525.49
6. Step 6: Final answer
   x = 10,606.76