Finding the Fourth Proportional to 14,665.56, 20,238.56 and 7,951.28

Step by Step Solution

1. Step 1: Write the proportion equation
   14,665.56 : 20,238.56 = 7,951.28 : x
2. Step 2: Convert to fraction form
   14,665.56/20,238.56 = 7,951.28/x
3. Step 3: Cross multiply
   14,665.56x = 20,238.56 × 7,951.28
4. Step 4: Simplify right side
   14,665.56x = 160,922,457.36
5. Step 5: Solve for x
   x = 160,922,457.36/14,665.56
6. Step 6: Final answer
   x = 10,972.81