Finding the Fourth Proportional to 10,678.58, 16,003.94 and 7,726.97

Step by Step Solution

1. Step 1: Write the proportion equation
   10,678.58 : 16,003.94 = 7,726.97 : x
2. Step 2: Convert to fraction form
   10,678.58/16,003.94 = 7,726.97/x
3. Step 3: Cross multiply
   10,678.58x = 16,003.94 × 7,726.97
4. Step 4: Simplify right side
   10,678.58x = 123,661,964.26
5. Step 5: Solve for x
   x = 123,661,964.26/10,678.58
6. Step 6: Final answer
   x = 11,580.38