Finding the Fourth Proportional to 13,150.54, 18,147.82 and 7,182.21

Step by Step Solution

1. Step 1: Write the proportion equation
   13,150.54 : 18,147.82 = 7,182.21 : x
2. Step 2: Convert to fraction form
   13,150.54/18,147.82 = 7,182.21/x
3. Step 3: Cross multiply
   13,150.54x = 18,147.82 × 7,182.21
4. Step 4: Simplify right side
   13,150.54x = 130,341,418.37
5. Step 5: Solve for x
   x = 130,341,418.37/13,150.54
6. Step 6: Final answer
   x = 9,911.49