Finding the Fourth Proportional to 12,255.78, 18,381.94 and 3,934.71

Step by Step Solution

1. Step 1: Write the proportion equation
   12,255.78 : 18,381.94 = 3,934.71 : x
2. Step 2: Convert to fraction form
   12,255.78/18,381.94 = 3,934.71/x
3. Step 3: Cross multiply
   12,255.78x = 18,381.94 × 3,934.71
4. Step 4: Simplify right side
   12,255.78x = 72,327,603.14
5. Step 5: Solve for x
   x = 72,327,603.14/12,255.78
6. Step 6: Final answer
   x = 5,901.51