Finding the Fourth Proportional to 13,150.72, 18,147.86 and 7,182.37

Step by Step Solution

1. Step 1: Write the proportion equation
   13,150.72 : 18,147.86 = 7,182.37 : x
2. Step 2: Convert to fraction form
   13,150.72/18,147.86 = 7,182.37/x
3. Step 3: Cross multiply
   13,150.72x = 18,147.86 × 7,182.37
4. Step 4: Simplify right side
   13,150.72x = 130,344,554.49
5. Step 5: Solve for x
   x = 130,344,554.49/13,150.72
6. Step 6: Final answer
   x = 9,911.59