Finding the Fourth Proportional to 12,487.77, 17,233.56 and 8,242.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,487.77 : 17,233.56 = 8,242.56 : x
2. Step 2: Convert to fraction form
   12,487.77/17,233.56 = 8,242.56/x
3. Step 3: Cross multiply
   12,487.77x = 17,233.56 × 8,242.56
4. Step 4: Simplify right side
   12,487.77x = 142,048,652.31
5. Step 5: Solve for x
   x = 142,048,652.31/12,487.77
6. Step 6: Final answer
   x = 11,375.02