Finding the Fourth Proportional to 13,118.31, 18,103.32 and 7,453.36

Step by Step Solution

1. Step 1: Write the proportion equation
   13,118.31 : 18,103.32 = 7,453.36 : x
2. Step 2: Convert to fraction form
   13,118.31/18,103.32 = 7,453.36/x
3. Step 3: Cross multiply
   13,118.31x = 18,103.32 × 7,453.36
4. Step 4: Simplify right side
   13,118.31x = 134,930,561.16
5. Step 5: Solve for x
   x = 134,930,561.16/13,118.31
6. Step 6: Final answer
   x = 10,285.67