Finding the Fourth Proportional to 11,919.77, 17,874.43 and 4,020.81

Step by Step Solution

1. Step 1: Write the proportion equation
   11,919.77 : 17,874.43 = 4,020.81 : x
2. Step 2: Convert to fraction form
   11,919.77/17,874.43 = 4,020.81/x
3. Step 3: Cross multiply
   11,919.77x = 17,874.43 × 4,020.81
4. Step 4: Simplify right side
   11,919.77x = 71,869,686.89
5. Step 5: Solve for x
   x = 71,869,686.89/11,919.77
6. Step 6: Final answer
   x = 6,029.45