Finding the Fourth Proportional to 6,915.73, 9,543.71 and 3,931.58

Step by Step Solution

1. Step 1: Write the proportion equation
   6,915.73 : 9,543.71 = 3,931.58 : x
2. Step 2: Convert to fraction form
   6,915.73/9,543.71 = 3,931.58/x
3. Step 3: Cross multiply
   6,915.73x = 9,543.71 × 3,931.58
4. Step 4: Simplify right side
   6,915.73x = 37,521,820.42
5. Step 5: Solve for x
   x = 37,521,820.42/6,915.73
6. Step 6: Final answer
   x = 5,425.58