Finding the Fourth Proportional to 30,085.72, 41,517.80 and 16,656.72

Step by Step Solution

1. Step 1: Write the proportion equation
   30,085.72 : 41,517.80 = 16,656.72 : x
2. Step 2: Convert to fraction form
   30,085.72/41,517.80 = 16,656.72/x
3. Step 3: Cross multiply
   30,085.72x = 41,517.80 × 16,656.72
4. Step 4: Simplify right side
   30,085.72x = 691,550,369.62
5. Step 5: Solve for x
   x = 691,550,369.62/30,085.72
6. Step 6: Final answer
   x = 22,986.00