Finding the Fourth Proportional to 12,225, 16,870.50 and 8,040.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,225 : 16,870.50 = 8,040.72 : x
2. Step 2: Convert to fraction form
   12,225/16,870.50 = 8,040.72/x
3. Step 3: Cross multiply
   12,225x = 16,870.50 × 8,040.72
4. Step 4: Simplify right side
   12,225x = 135,650,966.76
5. Step 5: Solve for x
   x = 135,650,966.76/12,225
6. Step 6: Final answer
   x = 11,096.19