Finding the Fourth Proportional to 13,113.34, 18,093.61 and 8,865.07

Step by Step Solution

1. Step 1: Write the proportion equation
   13,113.34 : 18,093.61 = 8,865.07 : x
2. Step 2: Convert to fraction form
   13,113.34/18,093.61 = 8,865.07/x
3. Step 3: Cross multiply
   13,113.34x = 18,093.61 × 8,865.07
4. Step 4: Simplify right side
   13,113.34x = 160,401,119.20
5. Step 5: Solve for x
   x = 160,401,119.20/13,113.34
6. Step 6: Final answer
   x = 12,231.90