Finding the Fourth Proportional to 8,656.20, 12,987.72 and 4,498.83

Step by Step Solution

1. Step 1: Write the proportion equation
   8,656.20 : 12,987.72 = 4,498.83 : x
2. Step 2: Convert to fraction form
   8,656.20/12,987.72 = 4,498.83/x
3. Step 3: Cross multiply
   8,656.20x = 12,987.72 × 4,498.83
4. Step 4: Simplify right side
   8,656.20x = 58,429,544.37
5. Step 5: Solve for x
   x = 58,429,544.37/8,656.20
6. Step 6: Final answer
   x = 6,750.02