Finding the Fourth Proportional to 13,123.22, 18,109.58 and 8,089.47

Step by Step Solution

1. Step 1: Write the proportion equation
   13,123.22 : 18,109.58 = 8,089.47 : x
2. Step 2: Convert to fraction form
   13,123.22/18,109.58 = 8,089.47/x
3. Step 3: Cross multiply
   13,123.22x = 18,109.58 × 8,089.47
4. Step 4: Simplify right side
   13,123.22x = 146,496,863.68
5. Step 5: Solve for x
   x = 146,496,863.68/13,123.22
6. Step 6: Final answer
   x = 11,163.18