Finding the Fourth Proportional to 12,649.92, 17,456.64 and 7,060.80

Step by Step Solution

1. Step 1: Write the proportion equation
   12,649.92 : 17,456.64 = 7,060.80 : x
2. Step 2: Convert to fraction form
   12,649.92/17,456.64 = 7,060.80/x
3. Step 3: Cross multiply
   12,649.92x = 17,456.64 × 7,060.80
4. Step 4: Simplify right side
   12,649.92x = 123,257,843.71
5. Step 5: Solve for x
   x = 123,257,843.71/12,649.92
6. Step 6: Final answer
   x = 9,743.76