Finding the Fourth Proportional to 14,271.10, 21,443.10 and 12,667.30

Step by Step Solution

1. Step 1: Write the proportion equation
   14,271.10 : 21,443.10 = 12,667.30 : x
2. Step 2: Convert to fraction form
   14,271.10/21,443.10 = 12,667.30/x
3. Step 3: Cross multiply
   14,271.10x = 21,443.10 × 12,667.30
4. Step 4: Simplify right side
   14,271.10x = 271,626,180.63
5. Step 5: Solve for x
   x = 271,626,180.63/14,271.10
6. Step 6: Final answer
   x = 19,033.30