Finding the Fourth Proportional to 31,445.91, 47,168.79 and 8,072.35

Step by Step Solution

1. Step 1: Write the proportion equation
   31,445.91 : 47,168.79 = 8,072.35 : x
2. Step 2: Convert to fraction form
   31,445.91/47,168.79 = 8,072.35/x
3. Step 3: Cross multiply
   31,445.91x = 47,168.79 × 8,072.35
4. Step 4: Simplify right side
   31,445.91x = 380,762,981.96
5. Step 5: Solve for x
   x = 380,762,981.96/31,445.91
6. Step 6: Final answer
   x = 12,108.51