Finding the Fourth Proportional to 17,819.82, 24,590.30 and 9,861.57

Step by Step Solution

1. Step 1: Write the proportion equation
   17,819.82 : 24,590.30 = 9,861.57 : x
2. Step 2: Convert to fraction form
   17,819.82/24,590.30 = 9,861.57/x
3. Step 3: Cross multiply
   17,819.82x = 24,590.30 × 9,861.57
4. Step 4: Simplify right side
   17,819.82x = 242,498,915.46
5. Step 5: Solve for x
   x = 242,498,915.46/17,819.82
6. Step 6: Final answer
   x = 13,608.38