Finding the Fourth Proportional to 12,608.82, 17,407.89 and 8,363.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,608.82 : 17,407.89 = 8,363.58 : x
2. Step 2: Convert to fraction form
   12,608.82/17,407.89 = 8,363.58/x
3. Step 3: Cross multiply
   12,608.82x = 17,407.89 × 8,363.58
4. Step 4: Simplify right side
   12,608.82x = 145,592,280.65
5. Step 5: Solve for x
   x = 145,592,280.65/12,608.82
6. Step 6: Final answer
   x = 11,546.86