Finding the Fourth Proportional to 15,736.58, 21,716.25 and 8,662.82

Step by Step Solution

1. Step 1: Write the proportion equation
   15,736.58 : 21,716.25 = 8,662.82 : x
2. Step 2: Convert to fraction form
   15,736.58/21,716.25 = 8,662.82/x
3. Step 3: Cross multiply
   15,736.58x = 21,716.25 × 8,662.82
4. Step 4: Simplify right side
   15,736.58x = 188,123,964.83
5. Step 5: Solve for x
   x = 188,123,964.83/15,736.58
6. Step 6: Final answer
   x = 11,954.56