Finding the Fourth Proportional to 3,915.88, 5,845.81 and 3,779.08

Step by Step Solution

1. Step 1: Write the proportion equation
   3,915.88 : 5,845.81 = 3,779.08 : x
2. Step 2: Convert to fraction form
   3,915.88/5,845.81 = 3,779.08/x
3. Step 3: Cross multiply
   3,915.88x = 5,845.81 × 3,779.08
4. Step 4: Simplify right side
   3,915.88x = 22,091,783.65
5. Step 5: Solve for x
   x = 22,091,783.65/3,915.88
6. Step 6: Final answer
   x = 5,641.59