Finding the Fourth Proportional to 17,908.56, 26,855.96 and 8,541.45

Step by Step Solution

1. Step 1: Write the proportion equation
   17,908.56 : 26,855.96 = 8,541.45 : x
2. Step 2: Convert to fraction form
   17,908.56/26,855.96 = 8,541.45/x
3. Step 3: Cross multiply
   17,908.56x = 26,855.96 × 8,541.45
4. Step 4: Simplify right side
   17,908.56x = 229,388,796.83
5. Step 5: Solve for x
   x = 229,388,796.83/17,908.56
6. Step 6: Final answer
   x = 12,808.89