Finding the Fourth Proportional to 12,457.45, 18,675.98 and 5,798.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,457.45 : 18,675.98 = 5,798.09 : x
2. Step 2: Convert to fraction form
   12,457.45/18,675.98 = 5,798.09/x
3. Step 3: Cross multiply
   12,457.45x = 18,675.98 × 5,798.09
4. Step 4: Simplify right side
   12,457.45x = 108,285,012.88
5. Step 5: Solve for x
   x = 108,285,012.88/12,457.45
6. Step 6: Final answer
   x = 8,692.39