Finding the Fourth Proportional to 9,663.06, 13,341.33 and 7,420.71

Step by Step Solution

1. Step 1: Write the proportion equation
   9,663.06 : 13,341.33 = 7,420.71 : x
2. Step 2: Convert to fraction form
   9,663.06/13,341.33 = 7,420.71/x
3. Step 3: Cross multiply
   9,663.06x = 13,341.33 × 7,420.71
4. Step 4: Simplify right side
   9,663.06x = 99,002,140.94
5. Step 5: Solve for x
   x = 99,002,140.94/9,663.06
6. Step 6: Final answer
   x = 10,245.42