Finding the Fourth Proportional to 13,124.70, 18,118.22 and 8,411.67

Step by Step Solution

1. Step 1: Write the proportion equation
   13,124.70 : 18,118.22 = 8,411.67 : x
2. Step 2: Convert to fraction form
   13,124.70/18,118.22 = 8,411.67/x
3. Step 3: Cross multiply
   13,124.70x = 18,118.22 × 8,411.67
4. Step 4: Simplify right side
   13,124.70x = 152,404,445.57
5. Step 5: Solve for x
   x = 152,404,445.57/13,124.70
6. Step 6: Final answer
   x = 11,612.03