Finding the Fourth Proportional to 22,620.63, 31,215.06 and 13,662.84

Step by Step Solution

1. Step 1: Write the proportion equation
   22,620.63 : 31,215.06 = 13,662.84 : x
2. Step 2: Convert to fraction form
   22,620.63/31,215.06 = 13,662.84/x
3. Step 3: Cross multiply
   22,620.63x = 31,215.06 × 13,662.84
4. Step 4: Simplify right side
   22,620.63x = 426,486,370.37
5. Step 5: Solve for x
   x = 426,486,370.37/22,620.63
6. Step 6: Final answer
   x = 18,853.87