Finding the Fourth Proportional to 13,114.76, 18,105.05 and 8,888.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,114.76 : 18,105.05 = 8,888.15 : x
2. Step 2: Convert to fraction form
   13,114.76/18,105.05 = 8,888.15/x
3. Step 3: Cross multiply
   13,114.76x = 18,105.05 × 8,888.15
4. Step 4: Simplify right side
   13,114.76x = 160,920,467.64
5. Step 5: Solve for x
   x = 160,920,467.64/13,114.76
6. Step 6: Final answer
   x = 12,270.18