Finding the Fourth Proportional to 20,734.96, 31,105.56 and 7,406.92

Step by Step Solution

1. Step 1: Write the proportion equation
   20,734.96 : 31,105.56 = 7,406.92 : x
2. Step 2: Convert to fraction form
   20,734.96/31,105.56 = 7,406.92/x
3. Step 3: Cross multiply
   20,734.96x = 31,105.56 × 7,406.92
4. Step 4: Simplify right side
   20,734.96x = 230,396,394.48
5. Step 5: Solve for x
   x = 230,396,394.48/20,734.96
6. Step 6: Final answer
   x = 11,111.49