Finding the Fourth Proportional to 9,884.27, 13,640.29 and 5,408.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,884.27 : 13,640.29 = 5,408.05 : x
2. Step 2: Convert to fraction form
   9,884.27/13,640.29 = 5,408.05/x
3. Step 3: Cross multiply
   9,884.27x = 13,640.29 × 5,408.05
4. Step 4: Simplify right side
   9,884.27x = 73,767,370.33
5. Step 5: Solve for x
   x = 73,767,370.33/9,884.27
6. Step 6: Final answer
   x = 7,463.11