Finding the Fourth Proportional to 22,067.06, 30,445.54 and 13,688.42

Step by Step Solution

1. Step 1: Write the proportion equation
   22,067.06 : 30,445.54 = 13,688.42 : x
2. Step 2: Convert to fraction form
   22,067.06/30,445.54 = 13,688.42/x
3. Step 3: Cross multiply
   22,067.06x = 30,445.54 × 13,688.42
4. Step 4: Simplify right side
   22,067.06x = 416,751,152.20
5. Step 5: Solve for x
   x = 416,751,152.20/22,067.06
6. Step 6: Final answer
   x = 18,885.67