Finding the Fourth Proportional to 17,819.50, 24,592.06 and 9,861.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,819.50 : 24,592.06 = 9,861.72 : x
2. Step 2: Convert to fraction form
   17,819.50/24,592.06 = 9,861.72/x
3. Step 3: Cross multiply
   17,819.50x = 24,592.06 × 9,861.72
4. Step 4: Simplify right side
   17,819.50x = 242,520,009.94
5. Step 5: Solve for x
   x = 242,520,009.94/17,819.50
6. Step 6: Final answer
   x = 13,609.81