Finding the Fourth Proportional to 21,815.46, 32,716.71 and 7,965.54

Step by Step Solution

1. Step 1: Write the proportion equation
   21,815.46 : 32,716.71 = 7,965.54 : x
2. Step 2: Convert to fraction form
   21,815.46/32,716.71 = 7,965.54/x
3. Step 3: Cross multiply
   21,815.46x = 32,716.71 × 7,965.54
4. Step 4: Simplify right side
   21,815.46x = 260,606,262.17
5. Step 5: Solve for x
   x = 260,606,262.17/21,815.46
6. Step 6: Final answer
   x = 11,945.94