Finding the Fourth Proportional to 31,995.42, 48,006.72 and 12,271.38

Step by Step Solution

1. Step 1: Write the proportion equation
   31,995.42 : 48,006.72 = 12,271.38 : x
2. Step 2: Convert to fraction form
   31,995.42/48,006.72 = 12,271.38/x
3. Step 3: Cross multiply
   31,995.42x = 48,006.72 × 12,271.38
4. Step 4: Simplify right side
   31,995.42x = 589,108,703.67
5. Step 5: Solve for x
   x = 589,108,703.67/31,995.42
6. Step 6: Final answer
   x = 18,412.28