Finding the Fourth Proportional to 13,081.24, 18,057.34 and 8,047.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,081.24 : 18,057.34 = 8,047.50 : x
2. Step 2: Convert to fraction form
   13,081.24/18,057.34 = 8,047.50/x
3. Step 3: Cross multiply
   13,081.24x = 18,057.34 × 8,047.50
4. Step 4: Simplify right side
   13,081.24x = 145,316,443.65
5. Step 5: Solve for x
   x = 145,316,443.65/13,081.24
6. Step 6: Final answer
   x = 11,108.77