Finding the Fourth Proportional to 12,182.12, 18,279.59 and 8,647.08

Step by Step Solution

1. Step 1: Write the proportion equation
   12,182.12 : 18,279.59 = 8,647.08 : x
2. Step 2: Convert to fraction form
   12,182.12/18,279.59 = 8,647.08/x
3. Step 3: Cross multiply
   12,182.12x = 18,279.59 × 8,647.08
4. Step 4: Simplify right side
   12,182.12x = 158,065,077.10
5. Step 5: Solve for x
   x = 158,065,077.10/12,182.12
6. Step 6: Final answer
   x = 12,975.17