Finding the Fourth Proportional to 12,146.88, 16,766.89 and 7,112.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,146.88 : 16,766.89 = 7,112.72 : x
2. Step 2: Convert to fraction form
   12,146.88/16,766.89 = 7,112.72/x
3. Step 3: Cross multiply
   12,146.88x = 16,766.89 × 7,112.72
4. Step 4: Simplify right side
   12,146.88x = 119,258,193.84
5. Step 5: Solve for x
   x = 119,258,193.84/12,146.88
6. Step 6: Final answer
   x = 9,818.01