Finding the Fourth Proportional to 21,477.86, 29,633.37 and 13,924.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,477.86 : 29,633.37 = 13,924.50 : x
2. Step 2: Convert to fraction form
   21,477.86/29,633.37 = 13,924.50/x
3. Step 3: Cross multiply
   21,477.86x = 29,633.37 × 13,924.50
4. Step 4: Simplify right side
   21,477.86x = 412,629,860.57
5. Step 5: Solve for x
   x = 412,629,860.57/21,477.86
6. Step 6: Final answer
   x = 19,211.87