Finding the Fourth Proportional to 13,111.20, 18,092.70 and 8,075.70

Step by Step Solution

1. Step 1: Write the proportion equation
   13,111.20 : 18,092.70 = 8,075.70 : x
2. Step 2: Convert to fraction form
   13,111.20/18,092.70 = 8,075.70/x
3. Step 3: Cross multiply
   13,111.20x = 18,092.70 × 8,075.70
4. Step 4: Simplify right side
   13,111.20x = 146,111,217.39
5. Step 5: Solve for x
   x = 146,111,217.39/13,111.20
6. Step 6: Final answer
   x = 11,144.00