Finding the Fourth Proportional to 16,978.92, 25,469.74 and 6,453.98

Step by Step Solution

1. Step 1: Write the proportion equation
   16,978.92 : 25,469.74 = 6,453.98 : x
2. Step 2: Convert to fraction form
   16,978.92/25,469.74 = 6,453.98/x
3. Step 3: Cross multiply
   16,978.92x = 25,469.74 × 6,453.98
4. Step 4: Simplify right side
   16,978.92x = 164,381,168.80
5. Step 5: Solve for x
   x = 164,381,168.80/16,978.92
6. Step 6: Final answer
   x = 9,681.49