Finding the Fourth Proportional to 9,386.56, 12,951.62 and 5,353.29

Step by Step Solution

1. Step 1: Write the proportion equation
   9,386.56 : 12,951.62 = 5,353.29 : x
2. Step 2: Convert to fraction form
   9,386.56/12,951.62 = 5,353.29/x
3. Step 3: Cross multiply
   9,386.56x = 12,951.62 × 5,353.29
4. Step 4: Simplify right side
   9,386.56x = 69,333,786.19
5. Step 5: Solve for x
   x = 69,333,786.19/9,386.56
6. Step 6: Final answer
   x = 7,386.50