Finding the Fourth Proportional to 20,790.56, 31,196.27 and 9,698.12

Step by Step Solution

1. Step 1: Write the proportion equation
   20,790.56 : 31,196.27 = 9,698.12 : x
2. Step 2: Convert to fraction form
   20,790.56/31,196.27 = 9,698.12/x
3. Step 3: Cross multiply
   20,790.56x = 31,196.27 × 9,698.12
4. Step 4: Simplify right side
   20,790.56x = 302,545,170.01
5. Step 5: Solve for x
   x = 302,545,170.01/20,790.56
6. Step 6: Final answer
   x = 14,552.05