Finding the Fourth Proportional to 12,728.34, 17,561.52 and 8,252.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,728.34 : 17,561.52 = 8,252.28 : x
2. Step 2: Convert to fraction form
   12,728.34/17,561.52 = 8,252.28/x
3. Step 3: Cross multiply
   12,728.34x = 17,561.52 × 8,252.28
4. Step 4: Simplify right side
   12,728.34x = 144,922,580.27
5. Step 5: Solve for x
   x = 144,922,580.27/12,728.34
6. Step 6: Final answer
   x = 11,385.82