Finding the Fourth Proportional to 5,434.60, 8,157.37 and 3,969.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,434.60 : 8,157.37 = 3,969.31 : x
2. Step 2: Convert to fraction form
   5,434.60/8,157.37 = 3,969.31/x
3. Step 3: Cross multiply
   5,434.60x = 8,157.37 × 3,969.31
4. Step 4: Simplify right side
   5,434.60x = 32,379,130.31
5. Step 5: Solve for x
   x = 32,379,130.31/5,434.60
6. Step 6: Final answer
   x = 5,957.96