Finding the Fourth Proportional to 6,915.12, 9,542.52 and 3,930.54

Step by Step Solution

1. Step 1: Write the proportion equation
   6,915.12 : 9,542.52 = 3,930.54 : x
2. Step 2: Convert to fraction form
   6,915.12/9,542.52 = 3,930.54/x
3. Step 3: Cross multiply
   6,915.12x = 9,542.52 × 3,930.54
4. Step 4: Simplify right side
   6,915.12x = 37,507,256.56
5. Step 5: Solve for x
   x = 37,507,256.56/6,915.12
6. Step 6: Final answer
   x = 5,423.95