Finding the Fourth Proportional to 17,826.78, 24,601.02 and 9,869.55

Step by Step Solution

1. Step 1: Write the proportion equation
   17,826.78 : 24,601.02 = 9,869.55 : x
2. Step 2: Convert to fraction form
   17,826.78/24,601.02 = 9,869.55/x
3. Step 3: Cross multiply
   17,826.78x = 24,601.02 × 9,869.55
4. Step 4: Simplify right side
   17,826.78x = 242,800,996.94
5. Step 5: Solve for x
   x = 242,800,996.94/17,826.78
6. Step 6: Final answer
   x = 13,620.01