Finding the Fourth Proportional to 9,947.36, 13,726.52 and 5,755.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,947.36 : 13,726.52 = 5,755.88 : x
2. Step 2: Convert to fraction form
   9,947.36/13,726.52 = 5,755.88/x
3. Step 3: Cross multiply
   9,947.36x = 13,726.52 × 5,755.88
4. Step 4: Simplify right side
   9,947.36x = 79,008,201.94
5. Step 5: Solve for x
   x = 79,008,201.94/9,947.36
6. Step 6: Final answer
   x = 7,942.63