Finding the Fourth Proportional to 30,934.86, 42,680.28 and 18,183.96

Step by Step Solution

1. Step 1: Write the proportion equation
   30,934.86 : 42,680.28 = 18,183.96 : x
2. Step 2: Convert to fraction form
   30,934.86/42,680.28 = 18,183.96/x
3. Step 3: Cross multiply
   30,934.86x = 42,680.28 × 18,183.96
4. Step 4: Simplify right side
   30,934.86x = 776,096,504.31
5. Step 5: Solve for x
   x = 776,096,504.31/30,934.86
6. Step 6: Final answer
   x = 25,088.09