Finding the Fourth Proportional to 12,581.39, 17,362.31 and 6,916.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,581.39 : 17,362.31 = 6,916.50 : x
2. Step 2: Convert to fraction form
   12,581.39/17,362.31 = 6,916.50/x
3. Step 3: Cross multiply
   12,581.39x = 17,362.31 × 6,916.50
4. Step 4: Simplify right side
   12,581.39x = 120,086,382.53
5. Step 5: Solve for x
   x = 120,086,382.53/12,581.39
6. Step 6: Final answer
   x = 9,544.76