Finding the Fourth Proportional to 15,063.39, 20,789.33 and 8,776.17

Step by Step Solution

1. Step 1: Write the proportion equation
   15,063.39 : 20,789.33 = 8,776.17 : x
2. Step 2: Convert to fraction form
   15,063.39/20,789.33 = 8,776.17/x
3. Step 3: Cross multiply
   15,063.39x = 20,789.33 × 8,776.17
4. Step 4: Simplify right side
   15,063.39x = 182,450,650.39
5. Step 5: Solve for x
   x = 182,450,650.39/15,063.39
6. Step 6: Final answer
   x = 12,112.19