Finding the Fourth Proportional to 2,938.53, 4,377.25 and 2,779.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,938.53 : 4,377.25 = 2,779.37 : x
2. Step 2: Convert to fraction form
   2,938.53/4,377.25 = 2,779.37/x
3. Step 3: Cross multiply
   2,938.53x = 4,377.25 × 2,779.37
4. Step 4: Simplify right side
   2,938.53x = 12,166,027.77
5. Step 5: Solve for x
   x = 12,166,027.77/2,938.53
6. Step 6: Final answer
   x = 4,140.17