Finding the Fourth Proportional to 13,774.50, 19,013.31 and 8,109.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,774.50 : 19,013.31 = 8,109.18 : x
2. Step 2: Convert to fraction form
   13,774.50/19,013.31 = 8,109.18/x
3. Step 3: Cross multiply
   13,774.50x = 19,013.31 × 8,109.18
4. Step 4: Simplify right side
   13,774.50x = 154,182,353.19
5. Step 5: Solve for x
   x = 154,182,353.19/13,774.50
6. Step 6: Final answer
   x = 11,193.32