Finding the Fourth Proportional to 38,665.89, 57,995.15 and 12,363.57

Step by Step Solution

1. Step 1: Write the proportion equation
   38,665.89 : 57,995.15 = 12,363.57 : x
2. Step 2: Convert to fraction form
   38,665.89/57,995.15 = 12,363.57/x
3. Step 3: Cross multiply
   38,665.89x = 57,995.15 × 12,363.57
4. Step 4: Simplify right side
   38,665.89x = 717,027,034.87
5. Step 5: Solve for x
   x = 717,027,034.87/38,665.89
6. Step 6: Final answer
   x = 18,544.18