Finding the Fourth Proportional to 7,013.20, 10,519.86 and 3,315.52

Step by Step Solution

1. Step 1: Write the proportion equation
   7,013.20 : 10,519.86 = 3,315.52 : x
2. Step 2: Convert to fraction form
   7,013.20/10,519.86 = 3,315.52/x
3. Step 3: Cross multiply
   7,013.20x = 10,519.86 × 3,315.52
4. Step 4: Simplify right side
   7,013.20x = 34,878,806.23
5. Step 5: Solve for x
   x = 34,878,806.23/7,013.20
6. Step 6: Final answer
   x = 4,973.31