Finding the Fourth Proportional to 13,150.46, 18,147.78 and 7,182.30

Step by Step Solution

1. Step 1: Write the proportion equation
   13,150.46 : 18,147.78 = 7,182.30 : x
2. Step 2: Convert to fraction form
   13,150.46/18,147.78 = 7,182.30/x
3. Step 3: Cross multiply
   13,150.46x = 18,147.78 × 7,182.30
4. Step 4: Simplify right side
   13,150.46x = 130,342,764.38
5. Step 5: Solve for x
   x = 130,342,764.38/13,150.46
6. Step 6: Final answer
   x = 9,911.65