Finding the Fourth Proportional to 16,789.76, 25,162.72 and 6,917.76

Step by Step Solution

1. Step 1: Write the proportion equation
   16,789.76 : 25,162.72 = 6,917.76 : x
2. Step 2: Convert to fraction form
   16,789.76/25,162.72 = 6,917.76/x
3. Step 3: Cross multiply
   16,789.76x = 25,162.72 × 6,917.76
4. Step 4: Simplify right side
   16,789.76x = 174,069,657.91
5. Step 5: Solve for x
   x = 174,069,657.91/16,789.76
6. Step 6: Final answer
   x = 10,367.61