Finding the Fourth Proportional to 10,291.20, 14,204.57 and 7,105.02

Step by Step Solution

1. Step 1: Write the proportion equation
   10,291.20 : 14,204.57 = 7,105.02 : x
2. Step 2: Convert to fraction form
   10,291.20/14,204.57 = 7,105.02/x
3. Step 3: Cross multiply
   10,291.20x = 14,204.57 × 7,105.02
4. Step 4: Simplify right side
   10,291.20x = 100,923,665.15
5. Step 5: Solve for x
   x = 100,923,665.15/10,291.20
6. Step 6: Final answer
   x = 9,806.79