Finding the Fourth Proportional to 13,771.50, 19,009.17 and 8,106.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,771.50 : 19,009.17 = 8,106.18 : x
2. Step 2: Convert to fraction form
   13,771.50/19,009.17 = 8,106.18/x
3. Step 3: Cross multiply
   13,771.50x = 19,009.17 × 8,106.18
4. Step 4: Simplify right side
   13,771.50x = 154,091,753.67
5. Step 5: Solve for x
   x = 154,091,753.67/13,771.50
6. Step 6: Final answer
   x = 11,189.18