Finding the Fourth Proportional to 12,685.82, 19,033.23 and 5,665.19

Step by Step Solution

1. Step 1: Write the proportion equation
   12,685.82 : 19,033.23 = 5,665.19 : x
2. Step 2: Convert to fraction form
   12,685.82/19,033.23 = 5,665.19/x
3. Step 3: Cross multiply
   12,685.82x = 19,033.23 × 5,665.19
4. Step 4: Simplify right side
   12,685.82x = 107,826,865.54
5. Step 5: Solve for x
   x = 107,826,865.54/12,685.82
6. Step 6: Final answer
   x = 8,499.80