Finding the Fourth Proportional to 21,443.64, 29,592.18 and 12,012

Step by Step Solution

1. Step 1: Write the proportion equation
   21,443.64 : 29,592.18 = 12,012 : x
2. Step 2: Convert to fraction form
   21,443.64/29,592.18 = 12,012/x
3. Step 3: Cross multiply
   21,443.64x = 29,592.18 × 12,012
4. Step 4: Simplify right side
   21,443.64x = 355,461,266.16
5. Step 5: Solve for x
   x = 355,461,266.16/21,443.64
6. Step 6: Final answer
   x = 16,576.54