Finding the Fourth Proportional to 13,158.52, 18,164.16 and 9,382.30

Step by Step Solution

1. Step 1: Write the proportion equation
   13,158.52 : 18,164.16 = 9,382.30 : x
2. Step 2: Convert to fraction form
   13,158.52/18,164.16 = 9,382.30/x
3. Step 3: Cross multiply
   13,158.52x = 18,164.16 × 9,382.30
4. Step 4: Simplify right side
   13,158.52x = 170,421,598.37
5. Step 5: Solve for x
   x = 170,421,598.37/13,158.52
6. Step 6: Final answer
   x = 12,951.43