Finding the Fourth Proportional to 15,462.82, 21,338.50 and 8,389.19

Step by Step Solution

1. Step 1: Write the proportion equation
   15,462.82 : 21,338.50 = 8,389.19 : x
2. Step 2: Convert to fraction form
   15,462.82/21,338.50 = 8,389.19/x
3. Step 3: Cross multiply
   15,462.82x = 21,338.50 × 8,389.19
4. Step 4: Simplify right side
   15,462.82x = 179,012,730.82
5. Step 5: Solve for x
   x = 179,012,730.82/15,462.82
6. Step 6: Final answer
   x = 11,576.98