Finding the Fourth Proportional to 3,702.72, 5,111.04 and 2,131.44

Step by Step Solution

1. Step 1: Write the proportion equation
   3,702.72 : 5,111.04 = 2,131.44 : x
2. Step 2: Convert to fraction form
   3,702.72/5,111.04 = 2,131.44/x
3. Step 3: Cross multiply
   3,702.72x = 5,111.04 × 2,131.44
4. Step 4: Simplify right side
   3,702.72x = 10,893,875.10
5. Step 5: Solve for x
   x = 10,893,875.10/3,702.72
6. Step 6: Final answer
   x = 2,942.13