Finding the Fourth Proportional to 11,855.56, 17,741.46 and 8,728.24

Step by Step Solution

1. Step 1: Write the proportion equation
   11,855.56 : 17,741.46 = 8,728.24 : x
2. Step 2: Convert to fraction form
   11,855.56/17,741.46 = 8,728.24/x
3. Step 3: Cross multiply
   11,855.56x = 17,741.46 × 8,728.24
4. Step 4: Simplify right side
   11,855.56x = 154,851,720.83
5. Step 5: Solve for x
   x = 154,851,720.83/11,855.56
6. Step 6: Final answer
   x = 13,061.53