Finding the Fourth Proportional to 18,456.47, 27,689.10 and 5,976.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18,456.47 : 27,689.10 = 5,976.50 : x
2. Step 2: Convert to fraction form
   18,456.47/27,689.10 = 5,976.50/x
3. Step 3: Cross multiply
   18,456.47x = 27,689.10 × 5,976.50
4. Step 4: Simplify right side
   18,456.47x = 165,483,906.15
5. Step 5: Solve for x
   x = 165,483,906.15/18,456.47
6. Step 6: Final answer
   x = 8,966.17