Finding the Fourth Proportional to 12,485.56, 17,225.94 and 8,238.73

Step by Step Solution

1. Step 1: Write the proportion equation
   12,485.56 : 17,225.94 = 8,238.73 : x
2. Step 2: Convert to fraction form
   12,485.56/17,225.94 = 8,238.73/x
3. Step 3: Cross multiply
   12,485.56x = 17,225.94 × 8,238.73
4. Step 4: Simplify right side
   12,485.56x = 141,919,868.66
5. Step 5: Solve for x
   x = 141,919,868.66/12,485.56
6. Step 6: Final answer
   x = 11,366.72