Finding the Fourth Proportional to 3,478.72, 5,198.92 and 2,543.62

Step by Step Solution

1. Step 1: Write the proportion equation
   3,478.72 : 5,198.92 = 2,543.62 : x
2. Step 2: Convert to fraction form
   3,478.72/5,198.92 = 2,543.62/x
3. Step 3: Cross multiply
   3,478.72x = 5,198.92 × 2,543.62
4. Step 4: Simplify right side
   3,478.72x = 13,224,076.89
5. Step 5: Solve for x
   x = 13,224,076.89/3,478.72
6. Step 6: Final answer
   x = 3,801.42