Finding the Fourth Proportional to 7,078.27, 10,618.69 and 2,915.97

Step by Step Solution

1. Step 1: Write the proportion equation
   7,078.27 : 10,618.69 = 2,915.97 : x
2. Step 2: Convert to fraction form
   7,078.27/10,618.69 = 2,915.97/x
3. Step 3: Cross multiply
   7,078.27x = 10,618.69 × 2,915.97
4. Step 4: Simplify right side
   7,078.27x = 30,963,774.58
5. Step 5: Solve for x
   x = 30,963,774.58/7,078.27
6. Step 6: Final answer
   x = 4,374.48