Finding the Fourth Proportional to 16,978.71, 25,472.48 and 6,448.92

Step by Step Solution

1. Step 1: Write the proportion equation
   16,978.71 : 25,472.48 = 6,448.92 : x
2. Step 2: Convert to fraction form
   16,978.71/25,472.48 = 6,448.92/x
3. Step 3: Cross multiply
   16,978.71x = 25,472.48 × 6,448.92
4. Step 4: Simplify right side
   16,978.71x = 164,269,985.72
5. Step 5: Solve for x
   x = 164,269,985.72/16,978.71
6. Step 6: Final answer
   x = 9,675.06