Finding the Fourth Proportional to 9,966.72, 14,938.06 and 4,413.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,966.72 : 14,938.06 = 4,413.76 : x
2. Step 2: Convert to fraction form
   9,966.72/14,938.06 = 4,413.76/x
3. Step 3: Cross multiply
   9,966.72x = 14,938.06 × 4,413.76
4. Step 4: Simplify right side
   9,966.72x = 65,933,011.71
5. Step 5: Solve for x
   x = 65,933,011.71/9,966.72
6. Step 6: Final answer
   x = 6,615.32