Finding the Fourth Proportional to 13,488.02, 18,613.50 and 7,519.57

Step by Step Solution

1. Step 1: Write the proportion equation
   13,488.02 : 18,613.50 = 7,519.57 : x
2. Step 2: Convert to fraction form
   13,488.02/18,613.50 = 7,519.57/x
3. Step 3: Cross multiply
   13,488.02x = 18,613.50 × 7,519.57
4. Step 4: Simplify right side
   13,488.02x = 139,965,511.26
5. Step 5: Solve for x
   x = 139,965,511.26/13,488.02
6. Step 6: Final answer
   x = 10,377.02