Finding the Fourth Proportional to 25,939.96, 38,913.54 and 8,404.12

Step by Step Solution

1. Step 1: Write the proportion equation
   25,939.96 : 38,913.54 = 8,404.12 : x
2. Step 2: Convert to fraction form
   25,939.96/38,913.54 = 8,404.12/x
3. Step 3: Cross multiply
   25,939.96x = 38,913.54 × 8,404.12
4. Step 4: Simplify right side
   25,939.96x = 327,034,059.78
5. Step 5: Solve for x
   x = 327,034,059.78/25,939.96
6. Step 6: Final answer
   x = 12,607.35