Finding the Fourth Proportional to 5,680.30, 7,834.37 and 3,691.49

Step by Step Solution

1. Step 1: Write the proportion equation
   5,680.30 : 7,834.37 = 3,691.49 : x
2. Step 2: Convert to fraction form
   5,680.30/7,834.37 = 3,691.49/x
3. Step 3: Cross multiply
   5,680.30x = 7,834.37 × 3,691.49
4. Step 4: Simplify right side
   5,680.30x = 28,920,499.64
5. Step 5: Solve for x
   x = 28,920,499.64/5,680.30
6. Step 6: Final answer
   x = 5,091.37