Finding the Fourth Proportional to 9,287.39, 12,816.47 and 5,038.37

Step by Step Solution

1. Step 1: Write the proportion equation
   9,287.39 : 12,816.47 = 5,038.37 : x
2. Step 2: Convert to fraction form
   9,287.39/12,816.47 = 5,038.37/x
3. Step 3: Cross multiply
   9,287.39x = 12,816.47 × 5,038.37
4. Step 4: Simplify right side
   9,287.39x = 64,574,028.68
5. Step 5: Solve for x
   x = 64,574,028.68/9,287.39
6. Step 6: Final answer
   x = 6,952.88