Finding the Fourth Proportional to 9,218.72, 13,826.99 and 2,555.71

Step by Step Solution

1. Step 1: Write the proportion equation
   9,218.72 : 13,826.99 = 2,555.71 : x
2. Step 2: Convert to fraction form
   9,218.72/13,826.99 = 2,555.71/x
3. Step 3: Cross multiply
   9,218.72x = 13,826.99 × 2,555.71
4. Step 4: Simplify right side
   9,218.72x = 35,337,748.43
5. Step 5: Solve for x
   x = 35,337,748.43/9,218.72
6. Step 6: Final answer
   x = 3,833.26