Finding the Fourth Proportional to 17,818.89, 24,590.58 and 9,861.85

Step by Step Solution

1. Step 1: Write the proportion equation
   17,818.89 : 24,590.58 = 9,861.85 : x
2. Step 2: Convert to fraction form
   17,818.89/24,590.58 = 9,861.85/x
3. Step 3: Cross multiply
   17,818.89x = 24,590.58 × 9,861.85
4. Step 4: Simplify right side
   17,818.89x = 242,508,611.37
5. Step 5: Solve for x
   x = 242,508,611.37/17,818.89
6. Step 6: Final answer
   x = 13,609.64