Finding the Fourth Proportional to 12,649.78, 17,456.70 and 7,060.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,649.78 : 17,456.70 = 7,060.78 : x
2. Step 2: Convert to fraction form
   12,649.78/17,456.70 = 7,060.78/x
3. Step 3: Cross multiply
   12,649.78x = 17,456.70 × 7,060.78
4. Step 4: Simplify right side
   12,649.78x = 123,257,918.23
5. Step 5: Solve for x
   x = 123,257,918.23/12,649.78
6. Step 6: Final answer
   x = 9,743.88