Finding the Fourth Proportional to 22,261.42, 30,722.24 and 12,830.58

Step by Step Solution

1. Step 1: Write the proportion equation
   22,261.42 : 30,722.24 = 12,830.58 : x
2. Step 2: Convert to fraction form
   22,261.42/30,722.24 = 12,830.58/x
3. Step 3: Cross multiply
   22,261.42x = 30,722.24 × 12,830.58
4. Step 4: Simplify right side
   22,261.42x = 394,184,158.10
5. Step 5: Solve for x
   x = 394,184,158.10/22,261.42
6. Step 6: Final answer
   x = 17,707.05