Finding the Fourth Proportional to 13,063.72, 18,019.30 and 8,353.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,063.72 : 18,019.30 = 8,353.96 : x
2. Step 2: Convert to fraction form
   13,063.72/18,019.30 = 8,353.96/x
3. Step 3: Cross multiply
   13,063.72x = 18,019.30 × 8,353.96
4. Step 4: Simplify right side
   13,063.72x = 150,532,511.43
5. Step 5: Solve for x
   x = 150,532,511.43/13,063.72
6. Step 6: Final answer
   x = 11,522.94