Finding the Fourth Proportional to 12,446.76, 17,176.89 and 7,142.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,446.76 : 17,176.89 = 7,142.52 : x
2. Step 2: Convert to fraction form
   12,446.76/17,176.89 = 7,142.52/x
3. Step 3: Cross multiply
   12,446.76x = 17,176.89 × 7,142.52
4. Step 4: Simplify right side
   12,446.76x = 122,686,280.36
5. Step 5: Solve for x
   x = 122,686,280.36/12,446.76
6. Step 6: Final answer
   x = 9,856.88