Finding the Fourth Proportional to 9,371.68, 12,934.20 and 5,392.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,371.68 : 12,934.20 = 5,392.72 : x
2. Step 2: Convert to fraction form
   9,371.68/12,934.20 = 5,392.72/x
3. Step 3: Cross multiply
   9,371.68x = 12,934.20 × 5,392.72
4. Step 4: Simplify right side
   9,371.68x = 69,750,519.02
5. Step 5: Solve for x
   x = 69,750,519.02/9,371.68
6. Step 6: Final answer
   x = 7,442.69