Finding the Fourth Proportional to 22,166.19, 30,590.06 and 12,734.55

Step by Step Solution

1. Step 1: Write the proportion equation
   22,166.19 : 30,590.06 = 12,734.55 : x
2. Step 2: Convert to fraction form
   22,166.19/30,590.06 = 12,734.55/x
3. Step 3: Cross multiply
   22,166.19x = 30,590.06 × 12,734.55
4. Step 4: Simplify right side
   22,166.19x = 389,550,584.90
5. Step 5: Solve for x
   x = 389,550,584.90/22,166.19
6. Step 6: Final answer
   x = 17,574.09