Finding the Fourth Proportional to 11,142.72, 16,713.24 and 3,245.30

Step by Step Solution

1. Step 1: Write the proportion equation
   11,142.72 : 16,713.24 = 3,245.30 : x
2. Step 2: Convert to fraction form
   11,142.72/16,713.24 = 3,245.30/x
3. Step 3: Cross multiply
   11,142.72x = 16,713.24 × 3,245.30
4. Step 4: Simplify right side
   11,142.72x = 54,239,477.77
5. Step 5: Solve for x
   x = 54,239,477.77/11,142.72
6. Step 6: Final answer
   x = 4,867.71