Finding the Fourth Proportional to 31,104.24, 46,594.20 and 21,219

Step by Step Solution

1. Step 1: Write the proportion equation
   31,104.24 : 46,594.20 = 21,219 : x
2. Step 2: Convert to fraction form
   31,104.24/46,594.20 = 21,219/x
3. Step 3: Cross multiply
   31,104.24x = 46,594.20 × 21,219
4. Step 4: Simplify right side
   31,104.24x = 988,682,329.80
5. Step 5: Solve for x
   x = 988,682,329.80/31,104.24
6. Step 6: Final answer
   x = 31,786.10