Finding the Fourth Proportional to 9,947.36, 13,726.32 and 5,754.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,947.36 : 13,726.32 = 5,754.80 : x
2. Step 2: Convert to fraction form
   9,947.36/13,726.32 = 5,754.80/x
3. Step 3: Cross multiply
   9,947.36x = 13,726.32 × 5,754.80
4. Step 4: Simplify right side
   9,947.36x = 78,992,226.34
5. Step 5: Solve for x
   x = 78,992,226.34/9,947.36
6. Step 6: Final answer
   x = 7,941.02