Finding the Fourth Proportional to 15,467.82, 21,345.49 and 8,394.09

Step by Step Solution

1. Step 1: Write the proportion equation
   15,467.82 : 21,345.49 = 8,394.09 : x
2. Step 2: Convert to fraction form
   15,467.82/21,345.49 = 8,394.09/x
3. Step 3: Cross multiply
   15,467.82x = 21,345.49 × 8,394.09
4. Step 4: Simplify right side
   15,467.82x = 179,175,964.15
5. Step 5: Solve for x
   x = 179,175,964.15/15,467.82
6. Step 6: Final answer
   x = 11,583.79