Finding the Fourth Proportional to 10,657.62, 14,689.89 and 7,119.54

Step by Step Solution

1. Step 1: Write the proportion equation
   10,657.62 : 14,689.89 = 7,119.54 : x
2. Step 2: Convert to fraction form
   10,657.62/14,689.89 = 7,119.54/x
3. Step 3: Cross multiply
   10,657.62x = 14,689.89 × 7,119.54
4. Step 4: Simplify right side
   10,657.62x = 104,585,259.45
5. Step 5: Solve for x
   x = 104,585,259.45/10,657.62
6. Step 6: Final answer
   x = 9,813.19