Finding the Fourth Proportional to 13,150.64, 18,148.35 and 7,182.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,150.64 : 18,148.35 = 7,182.56 : x
2. Step 2: Convert to fraction form
   13,150.64/18,148.35 = 7,182.56/x
3. Step 3: Cross multiply
   13,150.64x = 18,148.35 × 7,182.56
4. Step 4: Simplify right side
   13,150.64x = 130,351,522.03
5. Step 5: Solve for x
   x = 130,351,522.03/13,150.64
6. Step 6: Final answer
   x = 9,912.18