Finding the Fourth Proportional to 8,558.89, 12,829.59 and 5,785.83

Step by Step Solution

1. Step 1: Write the proportion equation
   8,558.89 : 12,829.59 = 5,785.83 : x
2. Step 2: Convert to fraction form
   8,558.89/12,829.59 = 5,785.83/x
3. Step 3: Cross multiply
   8,558.89x = 12,829.59 × 5,785.83
4. Step 4: Simplify right side
   8,558.89x = 74,229,826.71
5. Step 5: Solve for x
   x = 74,229,826.71/8,558.89
6. Step 6: Final answer
   x = 8,672.84