Finding the Fourth Proportional to 10,817.31, 16,204.10 and 8,343.57

Step by Step Solution

1. Step 1: Write the proportion equation
   10,817.31 : 16,204.10 = 8,343.57 : x
2. Step 2: Convert to fraction form
   10,817.31/16,204.10 = 8,343.57/x
3. Step 3: Cross multiply
   10,817.31x = 16,204.10 × 8,343.57
4. Step 4: Simplify right side
   10,817.31x = 135,200,000.92
5. Step 5: Solve for x
   x = 135,200,000.92/10,817.31
6. Step 6: Final answer
   x = 12,498.49