Finding the Fourth Proportional to 12,688.49, 17,493.34 and 10,411.49

Step by Step Solution

1. Step 1: Write the proportion equation
   12,688.49 : 17,493.34 = 10,411.49 : x
2. Step 2: Convert to fraction form
   12,688.49/17,493.34 = 10,411.49/x
3. Step 3: Cross multiply
   12,688.49x = 17,493.34 × 10,411.49
4. Step 4: Simplify right side
   12,688.49x = 182,131,734.48
5. Step 5: Solve for x
   x = 182,131,734.48/12,688.49
6. Step 6: Final answer
   x = 14,354.09