Finding the Fourth Proportional to 11,967.80, 17,949.38 and 4,570.49

Step by Step Solution

1. Step 1: Write the proportion equation
   11,967.80 : 17,949.38 = 4,570.49 : x
2. Step 2: Convert to fraction form
   11,967.80/17,949.38 = 4,570.49/x
3. Step 3: Cross multiply
   11,967.80x = 17,949.38 × 4,570.49
4. Step 4: Simplify right side
   11,967.80x = 82,037,483.82
5. Step 5: Solve for x
   x = 82,037,483.82/11,967.80
6. Step 6: Final answer
   x = 6,854.85