Finding the Fourth Proportional to 12,256.83, 18,386.94 and 3,934.89

Step by Step Solution

1. Step 1: Write the proportion equation
   12,256.83 : 18,386.94 = 3,934.89 : x
2. Step 2: Convert to fraction form
   12,256.83/18,386.94 = 3,934.89/x
3. Step 3: Cross multiply
   12,256.83x = 18,386.94 × 3,934.89
4. Step 4: Simplify right side
   12,256.83x = 72,350,586.34
5. Step 5: Solve for x
   x = 72,350,586.34/12,256.83
6. Step 6: Final answer
   x = 5,902.88