Finding the Fourth Proportional to 13,324.82, 18,386.69 and 7,947.54

Step by Step Solution

1. Step 1: Write the proportion equation
   13,324.82 : 18,386.69 = 7,947.54 : x
2. Step 2: Convert to fraction form
   13,324.82/18,386.69 = 7,947.54/x
3. Step 3: Cross multiply
   13,324.82x = 18,386.69 × 7,947.54
4. Step 4: Simplify right side
   13,324.82x = 146,128,914.50
5. Step 5: Solve for x
   x = 146,128,914.50/13,324.82
6. Step 6: Final answer
   x = 10,966.67