Finding the Fourth Proportional to 8,723.88, 13,078.37 and 3,789.76

Step by Step Solution

1. Step 1: Write the proportion equation
   8,723.88 : 13,078.37 = 3,789.76 : x
2. Step 2: Convert to fraction form
   8,723.88/13,078.37 = 3,789.76/x
3. Step 3: Cross multiply
   8,723.88x = 13,078.37 × 3,789.76
4. Step 4: Simplify right side
   8,723.88x = 49,563,909.31
5. Step 5: Solve for x
   x = 49,563,909.31/8,723.88
6. Step 6: Final answer
   x = 5,681.41