Finding the Fourth Proportional to 8,860.56, 13,291.08 and 2,286.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,860.56 : 13,291.08 = 2,286.72 : x
2. Step 2: Convert to fraction form
   8,860.56/13,291.08 = 2,286.72/x
3. Step 3: Cross multiply
   8,860.56x = 13,291.08 × 2,286.72
4. Step 4: Simplify right side
   8,860.56x = 30,392,978.46
5. Step 5: Solve for x
   x = 30,392,978.46/8,860.56
6. Step 6: Final answer
   x = 3,430.14