Finding the Fourth Proportional to 9,772.56, 14,624.78 and 7,997.04

Step by Step Solution

1. Step 1: Write the proportion equation
   9,772.56 : 14,624.78 = 7,997.04 : x
2. Step 2: Convert to fraction form
   9,772.56/14,624.78 = 7,997.04/x
3. Step 3: Cross multiply
   9,772.56x = 14,624.78 × 7,997.04
4. Step 4: Simplify right side
   9,772.56x = 116,954,910.67
5. Step 5: Solve for x
   x = 116,954,910.67/9,772.56
6. Step 6: Final answer
   x = 11,967.68