Finding the Fourth Proportional to 13,281.62, 18,324.52 and 7,538.14

Step by Step Solution

1. Step 1: Write the proportion equation
   13,281.62 : 18,324.52 = 7,538.14 : x
2. Step 2: Convert to fraction form
   13,281.62/18,324.52 = 7,538.14/x
3. Step 3: Cross multiply
   13,281.62x = 18,324.52 × 7,538.14
4. Step 4: Simplify right side
   13,281.62x = 138,132,856.72
5. Step 5: Solve for x
   x = 138,132,856.72/13,281.62
6. Step 6: Final answer
   x = 10,400.30