Finding the Fourth Proportional to 9,339.27, 12,888.18 and 5,147.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,339.27 : 12,888.18 = 5,147.52 : x
2. Step 2: Convert to fraction form
   9,339.27/12,888.18 = 5,147.52/x
3. Step 3: Cross multiply
   9,339.27x = 12,888.18 × 5,147.52
4. Step 4: Simplify right side
   9,339.27x = 66,342,164.31
5. Step 5: Solve for x
   x = 66,342,164.31/9,339.27
6. Step 6: Final answer
   x = 7,103.57