Finding the Fourth Proportional to 21,323.57, 31,968.84 and 14,292.32

Step by Step Solution

1. Step 1: Write the proportion equation
   21,323.57 : 31,968.84 = 14,292.32 : x
2. Step 2: Convert to fraction form
   21,323.57/31,968.84 = 14,292.32/x
3. Step 3: Cross multiply
   21,323.57x = 31,968.84 × 14,292.32
4. Step 4: Simplify right side
   21,323.57x = 456,908,891.31
5. Step 5: Solve for x
   x = 456,908,891.31/21,323.57
6. Step 6: Final answer
   x = 21,427.41