Finding the Fourth Proportional to 22,665.22, 31,279.98 and 13,236.82

Step by Step Solution

1. Step 1: Write the proportion equation
   22,665.22 : 31,279.98 = 13,236.82 : x
2. Step 2: Convert to fraction form
   22,665.22/31,279.98 = 13,236.82/x
3. Step 3: Cross multiply
   22,665.22x = 31,279.98 × 13,236.82
4. Step 4: Simplify right side
   22,665.22x = 414,047,464.86
5. Step 5: Solve for x
   x = 414,047,464.86/22,665.22
6. Step 6: Final answer
   x = 18,267.97