Finding the Fourth Proportional to 12,410.76, 17,141.46 and 8,211.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,410.76 : 17,141.46 = 8,211.72 : x
2. Step 2: Convert to fraction form
   12,410.76/17,141.46 = 8,211.72/x
3. Step 3: Cross multiply
   12,410.76x = 17,141.46 × 8,211.72
4. Step 4: Simplify right side
   12,410.76x = 140,760,869.91
5. Step 5: Solve for x
   x = 140,760,869.91/12,410.76
6. Step 6: Final answer
   x = 11,341.84