Finding the Fourth Proportional to 12,198.33, 18,298.72 and 3,313.80

Step by Step Solution

1. Step 1: Write the proportion equation
   12,198.33 : 18,298.72 = 3,313.80 : x
2. Step 2: Convert to fraction form
   12,198.33/18,298.72 = 3,313.80/x
3. Step 3: Cross multiply
   12,198.33x = 18,298.72 × 3,313.80
4. Step 4: Simplify right side
   12,198.33x = 60,638,298.34
5. Step 5: Solve for x
   x = 60,638,298.34/12,198.33
6. Step 6: Final answer
   x = 4,971.03