Finding the Fourth Proportional to 13,150.17, 18,147.71 and 7,182.09

Step by Step Solution

1. Step 1: Write the proportion equation
   13,150.17 : 18,147.71 = 7,182.09 : x
2. Step 2: Convert to fraction form
   13,150.17/18,147.71 = 7,182.09/x
3. Step 3: Cross multiply
   13,150.17x = 18,147.71 × 7,182.09
4. Step 4: Simplify right side
   13,150.17x = 130,338,450.60
5. Step 5: Solve for x
   x = 130,338,450.60/13,150.17
6. Step 6: Final answer
   x = 9,911.54