Finding the Fourth Proportional to 11,778.98, 17,664.15 and 3,456.86

Step by Step Solution

1. Step 1: Write the proportion equation
   11,778.98 : 17,664.15 = 3,456.86 : x
2. Step 2: Convert to fraction form
   11,778.98/17,664.15 = 3,456.86/x
3. Step 3: Cross multiply
   11,778.98x = 17,664.15 × 3,456.86
4. Step 4: Simplify right side
   11,778.98x = 61,062,493.57
5. Step 5: Solve for x
   x = 61,062,493.57/11,778.98
6. Step 6: Final answer
   x = 5,184.02