Finding the Fourth Proportional to 22,742.63, 31,383.82 and 12,671.02

Step by Step Solution

1. Step 1: Write the proportion equation
   22,742.63 : 31,383.82 = 12,671.02 : x
2. Step 2: Convert to fraction form
   22,742.63/31,383.82 = 12,671.02/x
3. Step 3: Cross multiply
   22,742.63x = 31,383.82 × 12,671.02
4. Step 4: Simplify right side
   22,742.63x = 397,665,010.90
5. Step 5: Solve for x
   x = 397,665,010.90/22,742.63
6. Step 6: Final answer
   x = 17,485.45