Finding the Fourth Proportional to 5,899.30, 8,143.59 and 3,906.34

Step by Step Solution

1. Step 1: Write the proportion equation
   5,899.30 : 8,143.59 = 3,906.34 : x
2. Step 2: Convert to fraction form
   5,899.30/8,143.59 = 3,906.34/x
3. Step 3: Cross multiply
   5,899.30x = 8,143.59 × 3,906.34
4. Step 4: Simplify right side
   5,899.30x = 31,811,631.36
5. Step 5: Solve for x
   x = 31,811,631.36/5,899.30
6. Step 6: Final answer
   x = 5,392.44