Finding the Fourth Proportional to 17,818.72, 26,713.86 and 8,454.04

Step by Step Solution

1. Step 1: Write the proportion equation
   17,818.72 : 26,713.86 = 8,454.04 : x
2. Step 2: Convert to fraction form
   17,818.72/26,713.86 = 8,454.04/x
3. Step 3: Cross multiply
   17,818.72x = 26,713.86 × 8,454.04
4. Step 4: Simplify right side
   17,818.72x = 225,840,040.99
5. Step 5: Solve for x
   x = 225,840,040.99/17,818.72
6. Step 6: Final answer
   x = 12,674.31