Finding the Fourth Proportional to 5,900.31, 8,145.83 and 3,913.58

Step by Step Solution

1. Step 1: Write the proportion equation
   5,900.31 : 8,145.83 = 3,913.58 : x
2. Step 2: Convert to fraction form
   5,900.31/8,145.83 = 3,913.58/x
3. Step 3: Cross multiply
   5,900.31x = 8,145.83 × 3,913.58
4. Step 4: Simplify right side
   5,900.31x = 31,879,387.52
5. Step 5: Solve for x
   x = 31,879,387.52/5,900.31
6. Step 6: Final answer
   x = 5,403.00