Finding the Fourth Proportional to 13,191.32, 18,194.37 and 8,086.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,191.32 : 18,194.37 = 8,086.96 : x
2. Step 2: Convert to fraction form
   13,191.32/18,194.37 = 8,086.96/x
3. Step 3: Cross multiply
   13,191.32x = 18,194.37 × 8,086.96
4. Step 4: Simplify right side
   13,191.32x = 147,137,096.93
5. Step 5: Solve for x
   x = 147,137,096.93/13,191.32
6. Step 6: Final answer
   x = 11,154.08