Finding the Fourth Proportional to 13,151.46, 18,154.05 and 8,116.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,151.46 : 18,154.05 = 8,116.50 : x
2. Step 2: Convert to fraction form
   13,151.46/18,154.05 = 8,116.50/x
3. Step 3: Cross multiply
   13,151.46x = 18,154.05 × 8,116.50
4. Step 4: Simplify right side
   13,151.46x = 147,347,346.83
5. Step 5: Solve for x
   x = 147,347,346.83/13,151.46
6. Step 6: Final answer
   x = 11,203.88