Finding the Fourth Proportional to 13,488.19, 18,612.38 and 7,519.30

Step by Step Solution

1. Step 1: Write the proportion equation
   13,488.19 : 18,612.38 = 7,519.30 : x
2. Step 2: Convert to fraction form
   13,488.19/18,612.38 = 7,519.30/x
3. Step 3: Cross multiply
   13,488.19x = 18,612.38 × 7,519.30
4. Step 4: Simplify right side
   13,488.19x = 139,952,031.34
5. Step 5: Solve for x
   x = 139,952,031.34/13,488.19
6. Step 6: Final answer
   x = 10,375.89