Finding the Fourth Proportional to 13,443.09, 18,551.82 and 8,134.80

Step by Step Solution

1. Step 1: Write the proportion equation
   13,443.09 : 18,551.82 = 8,134.80 : x
2. Step 2: Convert to fraction form
   13,443.09/18,551.82 = 8,134.80/x
3. Step 3: Cross multiply
   13,443.09x = 18,551.82 × 8,134.80
4. Step 4: Simplify right side
   13,443.09x = 150,915,345.34
5. Step 5: Solve for x
   x = 150,915,345.34/13,443.09
6. Step 6: Final answer
   x = 11,226.24