Finding the Fourth Proportional to 22,085.59, 30,478.91 and 12,655.97

Step by Step Solution

1. Step 1: Write the proportion equation
   22,085.59 : 30,478.91 = 12,655.97 : x
2. Step 2: Convert to fraction form
   22,085.59/30,478.91 = 12,655.97/x
3. Step 3: Cross multiply
   22,085.59x = 30,478.91 × 12,655.97
4. Step 4: Simplify right side
   22,085.59x = 385,740,278.43
5. Step 5: Solve for x
   x = 385,740,278.43/22,085.59
6. Step 6: Final answer
   x = 17,465.70