Finding the Fourth Proportional to 11,877.89, 17,811.82 and 3,559.09

Step by Step Solution

1. Step 1: Write the proportion equation
   11,877.89 : 17,811.82 = 3,559.09 : x
2. Step 2: Convert to fraction form
   11,877.89/17,811.82 = 3,559.09/x
3. Step 3: Cross multiply
   11,877.89x = 17,811.82 × 3,559.09
4. Step 4: Simplify right side
   11,877.89x = 63,393,870.44
5. Step 5: Solve for x
   x = 63,393,870.44/11,877.89
6. Step 6: Final answer
   x = 5,337.13