Finding the Fourth Proportional to 22,085.25, 30,477.65 and 12,659.28

Step by Step Solution

1. Step 1: Write the proportion equation
   22,085.25 : 30,477.65 = 12,659.28 : x
2. Step 2: Convert to fraction form
   22,085.25/30,477.65 = 12,659.28/x
3. Step 3: Cross multiply
   22,085.25x = 30,477.65 × 12,659.28
4. Step 4: Simplify right side
   22,085.25x = 385,825,041.80
5. Step 5: Solve for x
   x = 385,825,041.80/22,085.25
6. Step 6: Final answer
   x = 17,469.81