Finding the Fourth Proportional to 6,431.30, 8,876.94 and 3,779.56

Step by Step Solution

1. Step 1: Write the proportion equation
   6,431.30 : 8,876.94 = 3,779.56 : x
2. Step 2: Convert to fraction form
   6,431.30/8,876.94 = 3,779.56/x
3. Step 3: Cross multiply
   6,431.30x = 8,876.94 × 3,779.56
4. Step 4: Simplify right side
   6,431.30x = 33,550,945.53
5. Step 5: Solve for x
   x = 33,550,945.53/6,431.30
6. Step 6: Final answer
   x = 5,216.82