Finding the Fourth Proportional to 12,758.81, 17,610.62 and 8,282.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,758.81 : 17,610.62 = 8,282.30 : x
2. Step 2: Convert to fraction form
   12,758.81/17,610.62 = 8,282.30/x
3. Step 3: Cross multiply
   12,758.81x = 17,610.62 × 8,282.30
4. Step 4: Simplify right side
   12,758.81x = 145,856,308.56
5. Step 5: Solve for x
   x = 145,856,308.56/12,758.81
6. Step 6: Final answer
   x = 11,431.82