Finding the Fourth Proportional to 11,916.42, 17,862.12 and 4,016.20

Step by Step Solution

1. Step 1: Write the proportion equation
   11,916.42 : 17,862.12 = 4,016.20 : x
2. Step 2: Convert to fraction form
   11,916.42/17,862.12 = 4,016.20/x
3. Step 3: Cross multiply
   11,916.42x = 17,862.12 × 4,016.20
4. Step 4: Simplify right side
   11,916.42x = 71,737,846.34
5. Step 5: Solve for x
   x = 71,737,846.34/11,916.42
6. Step 6: Final answer
   x = 6,020.08