Finding the Fourth Proportional to 31,461.96, 47,185.56 and 13,922.16

Step by Step Solution

1. Step 1: Write the proportion equation
   31,461.96 : 47,185.56 = 13,922.16 : x
2. Step 2: Convert to fraction form
   31,461.96/47,185.56 = 13,922.16/x
3. Step 3: Cross multiply
   31,461.96x = 47,185.56 × 13,922.16
4. Step 4: Simplify right side
   31,461.96x = 656,924,916.01
5. Step 5: Solve for x
   x = 656,924,916.01/31,461.96
6. Step 6: Final answer
   x = 20,879.97