Finding the Fourth Proportional to 9,840.11, 13,578.89 and 5,363.71

Step by Step Solution

1. Step 1: Write the proportion equation
   9,840.11 : 13,578.89 = 5,363.71 : x
2. Step 2: Convert to fraction form
   9,840.11/13,578.89 = 5,363.71/x
3. Step 3: Cross multiply
   9,840.11x = 13,578.89 × 5,363.71
4. Step 4: Simplify right side
   9,840.11x = 72,833,133.37
5. Step 5: Solve for x
   x = 72,833,133.37/9,840.11
6. Step 6: Final answer
   x = 7,401.66