Finding the Fourth Proportional to 9,859.31, 13,606.17 and 5,383.29

Step by Step Solution

1. Step 1: Write the proportion equation
   9,859.31 : 13,606.17 = 5,383.29 : x
2. Step 2: Convert to fraction form
   9,859.31/13,606.17 = 5,383.29/x
3. Step 3: Cross multiply
   9,859.31x = 13,606.17 × 5,383.29
4. Step 4: Simplify right side
   9,859.31x = 73,245,958.90
5. Step 5: Solve for x
   x = 73,245,958.90/9,859.31
6. Step 6: Final answer
   x = 7,429.12