Finding the Fourth Proportional to 7,086.42, 10,631.25 and 3,389.58

Step by Step Solution

1. Step 1: Write the proportion equation
   7,086.42 : 10,631.25 = 3,389.58 : x
2. Step 2: Convert to fraction form
   7,086.42/10,631.25 = 3,389.58/x
3. Step 3: Cross multiply
   7,086.42x = 10,631.25 × 3,389.58
4. Step 4: Simplify right side
   7,086.42x = 36,035,472.38
5. Step 5: Solve for x
   x = 36,035,472.38/7,086.42
6. Step 6: Final answer
   x = 5,085.14