Finding the Fourth Proportional to 9,860.82, 13,607.43 and 5,383.71

Step by Step Solution

1. Step 1: Write the proportion equation
   9,860.82 : 13,607.43 = 5,383.71 : x
2. Step 2: Convert to fraction form
   9,860.82/13,607.43 = 5,383.71/x
3. Step 3: Cross multiply
   9,860.82x = 13,607.43 × 5,383.71
4. Step 4: Simplify right side
   9,860.82x = 73,258,436.78
5. Step 5: Solve for x
   x = 73,258,436.78/9,860.82
6. Step 6: Final answer
   x = 7,429.25