Finding the Fourth Proportional to 5,380.63, 8,023.86 and 5,331.42

Step by Step Solution

1. Step 1: Write the proportion equation
   5,380.63 : 8,023.86 = 5,331.42 : x
2. Step 2: Convert to fraction form
   5,380.63/8,023.86 = 5,331.42/x
3. Step 3: Cross multiply
   5,380.63x = 8,023.86 × 5,331.42
4. Step 4: Simplify right side
   5,380.63x = 42,778,567.68
5. Step 5: Solve for x
   x = 42,778,567.68/5,380.63
6. Step 6: Final answer
   x = 7,950.48