Finding the Fourth Proportional to 5,900.86, 8,142.15 and 3,543.05

Step by Step Solution

1. Step 1: Write the proportion equation
   5,900.86 : 8,142.15 = 3,543.05 : x
2. Step 2: Convert to fraction form
   5,900.86/8,142.15 = 3,543.05/x
3. Step 3: Cross multiply
   5,900.86x = 8,142.15 × 3,543.05
4. Step 4: Simplify right side
   5,900.86x = 28,848,078.20
5. Step 5: Solve for x
   x = 28,848,078.20/5,900.86
6. Step 6: Final answer
   x = 4,888.79