Finding the Fourth Proportional to 31,874.72, 47,826.68 and 12,157.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,874.72 : 47,826.68 = 12,157.72 : x
2. Step 2: Convert to fraction form
   31,874.72/47,826.68 = 12,157.72/x
3. Step 3: Cross multiply
   31,874.72x = 47,826.68 × 12,157.72
4. Step 4: Simplify right side
   31,874.72x = 581,463,383.97
5. Step 5: Solve for x
   x = 581,463,383.97/31,874.72
6. Step 6: Final answer
   x = 18,242.15