Finding the Fourth Proportional to 22,806.77, 31,471.54 and 12,734.42

Step by Step Solution

1. Step 1: Write the proportion equation
   22,806.77 : 31,471.54 = 12,734.42 : x
2. Step 2: Convert to fraction form
   22,806.77/31,471.54 = 12,734.42/x
3. Step 3: Cross multiply
   22,806.77x = 31,471.54 × 12,734.42
4. Step 4: Simplify right side
   22,806.77x = 400,771,619.21
5. Step 5: Solve for x
   x = 400,771,619.21/22,806.77
6. Step 6: Final answer
   x = 17,572.49