Finding the Fourth Proportional to 13,528.62, 18,662.69 and 9,052.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,528.62 : 18,662.69 = 9,052.56 : x
2. Step 2: Convert to fraction form
   13,528.62/18,662.69 = 9,052.56/x
3. Step 3: Cross multiply
   13,528.62x = 18,662.69 × 9,052.56
4. Step 4: Simplify right side
   13,528.62x = 168,945,075.72
5. Step 5: Solve for x
   x = 168,945,075.72/13,528.62
6. Step 6: Final answer
   x = 12,487.98