Finding the Fourth Proportional to 21,443.31, 29,591.22 and 12,012.48

Step by Step Solution

1. Step 1: Write the proportion equation
   21,443.31 : 29,591.22 = 12,012.48 : x
2. Step 2: Convert to fraction form
   21,443.31/29,591.22 = 12,012.48/x
3. Step 3: Cross multiply
   21,443.31x = 29,591.22 × 12,012.48
4. Step 4: Simplify right side
   21,443.31x = 355,463,938.43
5. Step 5: Solve for x
   x = 355,463,938.43/21,443.31
6. Step 6: Final answer
   x = 16,576.92