Finding the Fourth Proportional to 13,150.85, 18,148.16 and 7,182.53

Step by Step Solution

1. Step 1: Write the proportion equation
   13,150.85 : 18,148.16 = 7,182.53 : x
2. Step 2: Convert to fraction form
   13,150.85/18,148.16 = 7,182.53/x
3. Step 3: Cross multiply
   13,150.85x = 18,148.16 × 7,182.53
4. Step 4: Simplify right side
   13,150.85x = 130,349,698.92
5. Step 5: Solve for x
   x = 130,349,698.92/13,150.85
6. Step 6: Final answer
   x = 9,911.89