Finding the Fourth Proportional to 9,724.15, 13,419.22 and 5,745.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,724.15 : 13,419.22 = 5,745.18 : x
2. Step 2: Convert to fraction form
   9,724.15/13,419.22 = 5,745.18/x
3. Step 3: Cross multiply
   9,724.15x = 13,419.22 × 5,745.18
4. Step 4: Simplify right side
   9,724.15x = 77,095,805.61
5. Step 5: Solve for x
   x = 77,095,805.61/9,724.15
6. Step 6: Final answer
   x = 7,928.28