Finding the Fourth Proportional to 5,969.67, 8,230.32 and 5,139.30

Step by Step Solution

1. Step 1: Write the proportion equation
   5,969.67 : 8,230.32 = 5,139.30 : x
2. Step 2: Convert to fraction form
   5,969.67/8,230.32 = 5,139.30/x
3. Step 3: Cross multiply
   5,969.67x = 8,230.32 × 5,139.30
4. Step 4: Simplify right side
   5,969.67x = 42,298,083.58
5. Step 5: Solve for x
   x = 42,298,083.58/5,969.67
6. Step 6: Final answer
   x = 7,085.50