Finding the Fourth Proportional to 6,915.33, 9,543.96 and 3,931.61

Step by Step Solution

1. Step 1: Write the proportion equation
   6,915.33 : 9,543.96 = 3,931.61 : x
2. Step 2: Convert to fraction form
   6,915.33/9,543.96 = 3,931.61/x
3. Step 3: Cross multiply
   6,915.33x = 9,543.96 × 3,931.61
4. Step 4: Simplify right side
   6,915.33x = 37,523,111.73
5. Step 5: Solve for x
   x = 37,523,111.73/6,915.33
6. Step 6: Final answer
   x = 5,426.08