Finding the Fourth Proportional to 13,109.50, 18,092.10 and 8,072.47

Step by Step Solution

1. Step 1: Write the proportion equation
   13,109.50 : 18,092.10 = 8,072.47 : x
2. Step 2: Convert to fraction form
   13,109.50/18,092.10 = 8,072.47/x
3. Step 3: Cross multiply
   13,109.50x = 18,092.10 × 8,072.47
4. Step 4: Simplify right side
   13,109.50x = 146,047,934.49
5. Step 5: Solve for x
   x = 146,047,934.49/13,109.50
6. Step 6: Final answer
   x = 11,140.62