Finding the Fourth Proportional to 12,146.76, 16,766.72 and 7,112.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,146.76 : 16,766.72 = 7,112.60 : x
2. Step 2: Convert to fraction form
   12,146.76/16,766.72 = 7,112.60/x
3. Step 3: Cross multiply
   12,146.76x = 16,766.72 × 7,112.60
4. Step 4: Simplify right side
   12,146.76x = 119,254,972.67
5. Step 5: Solve for x
   x = 119,254,972.67/12,146.76
6. Step 6: Final answer
   x = 9,817.84