Finding the Fourth Proportional to 10,016.80, 14,967.92 and 7,631.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,016.80 : 14,967.92 = 7,631.78 : x
2. Step 2: Convert to fraction form
   10,016.80/14,967.92 = 7,631.78/x
3. Step 3: Cross multiply
   10,016.80x = 14,967.92 × 7,631.78
4. Step 4: Simplify right side
   10,016.80x = 114,231,823.24
5. Step 5: Solve for x
   x = 114,231,823.24/10,016.80
6. Step 6: Final answer
   x = 11,404.02