Finding the Fourth Proportional to 5,781.08, 7,978.59 and 3,543.27

Step by Step Solution

1. Step 1: Write the proportion equation
   5,781.08 : 7,978.59 = 3,543.27 : x
2. Step 2: Convert to fraction form
   5,781.08/7,978.59 = 3,543.27/x
3. Step 3: Cross multiply
   5,781.08x = 7,978.59 × 3,543.27
4. Step 4: Simplify right side
   5,781.08x = 28,270,298.59
5. Step 5: Solve for x
   x = 28,270,298.59/5,781.08
6. Step 6: Final answer
   x = 4,890.15