Finding the Fourth Proportional to 8,520.83, 12,780.35 and 2,281.48

Step by Step Solution

1. Step 1: Write the proportion equation
   8,520.83 : 12,780.35 = 2,281.48 : x
2. Step 2: Convert to fraction form
   8,520.83/12,780.35 = 2,281.48/x
3. Step 3: Cross multiply
   8,520.83x = 12,780.35 × 2,281.48
4. Step 4: Simplify right side
   8,520.83x = 29,158,150.00
5. Step 5: Solve for x
   x = 29,158,150.00/8,520.83
6. Step 6: Final answer
   x = 3,421.99