Finding the Fourth Proportional to 15,647.82, 21,593.86 and 8,574.09

Step by Step Solution

1. Step 1: Write the proportion equation
   15,647.82 : 21,593.86 = 8,574.09 : x
2. Step 2: Convert to fraction form
   15,647.82/21,593.86 = 8,574.09/x
3. Step 3: Cross multiply
   15,647.82x = 21,593.86 × 8,574.09
4. Step 4: Simplify right side
   15,647.82x = 185,147,699.09
5. Step 5: Solve for x
   x = 185,147,699.09/15,647.82
6. Step 6: Final answer
   x = 11,832.17