Finding the Fourth Proportional to 7,276.89, 10,915.25 and 3,113.36

Step by Step Solution

1. Step 1: Write the proportion equation
   7,276.89 : 10,915.25 = 3,113.36 : x
2. Step 2: Convert to fraction form
   7,276.89/10,915.25 = 3,113.36/x
3. Step 3: Cross multiply
   7,276.89x = 10,915.25 × 3,113.36
4. Step 4: Simplify right side
   7,276.89x = 33,983,032.60
5. Step 5: Solve for x
   x = 33,983,032.60/7,276.89
6. Step 6: Final answer
   x = 4,669.99