Finding the Fourth Proportional to 21,924.86, 30,258.16 and 13,426.94

Step by Step Solution

1. Step 1: Write the proportion equation
   21,924.86 : 30,258.16 = 13,426.94 : x
2. Step 2: Convert to fraction form
   21,924.86/30,258.16 = 13,426.94/x
3. Step 3: Cross multiply
   21,924.86x = 30,258.16 × 13,426.94
4. Step 4: Simplify right side
   21,924.86x = 406,274,498.83
5. Step 5: Solve for x
   x = 406,274,498.83/21,924.86
6. Step 6: Final answer
   x = 18,530.31