Finding the Fourth Proportional to 10,727.76, 14,796.18 and 9,399.16

Step by Step Solution

1. Step 1: Write the proportion equation
   10,727.76 : 14,796.18 = 9,399.16 : x
2. Step 2: Convert to fraction form
   10,727.76/14,796.18 = 9,399.16/x
3. Step 3: Cross multiply
   10,727.76x = 14,796.18 × 9,399.16
4. Step 4: Simplify right side
   10,727.76x = 139,071,663.21
5. Step 5: Solve for x
   x = 139,071,663.21/10,727.76
6. Step 6: Final answer
   x = 12,963.72