Finding the Fourth Proportional to 3,498.30, 5,236.52 and 2,615.67

Step by Step Solution

1. Step 1: Write the proportion equation
   3,498.30 : 5,236.52 = 2,615.67 : x
2. Step 2: Convert to fraction form
   3,498.30/5,236.52 = 2,615.67/x
3. Step 3: Cross multiply
   3,498.30x = 5,236.52 × 2,615.67
4. Step 4: Simplify right side
   3,498.30x = 13,696,995.19
5. Step 5: Solve for x
   x = 13,696,995.19/3,498.30
6. Step 6: Final answer
   x = 3,915.33