Finding the Fourth Proportional to 9,365.31, 12,924.50 and 5,386.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,365.31 : 12,924.50 = 5,386.42 : x
2. Step 2: Convert to fraction form
   9,365.31/12,924.50 = 5,386.42/x
3. Step 3: Cross multiply
   9,365.31x = 12,924.50 × 5,386.42
4. Step 4: Simplify right side
   9,365.31x = 69,616,785.29
5. Step 5: Solve for x
   x = 69,616,785.29/9,365.31
6. Step 6: Final answer
   x = 7,433.47