Finding the Fourth Proportional to 25,945.34, 35,771.82 and 16,978.64

Step by Step Solution

1. Step 1: Write the proportion equation
   25,945.34 : 35,771.82 = 16,978.64 : x
2. Step 2: Convert to fraction form
   25,945.34/35,771.82 = 16,978.64/x
3. Step 3: Cross multiply
   25,945.34x = 35,771.82 × 16,978.64
4. Step 4: Simplify right side
   25,945.34x = 607,356,853.92
5. Step 5: Solve for x
   x = 607,356,853.92/25,945.34
6. Step 6: Final answer
   x = 23,409.09