Finding the Fourth Proportional to 7,139.67, 10,697.36 and 5,049.45

Step by Step Solution

1. Step 1: Write the proportion equation
   7,139.67 : 10,697.36 = 5,049.45 : x
2. Step 2: Convert to fraction form
   7,139.67/10,697.36 = 5,049.45/x
3. Step 3: Cross multiply
   7,139.67x = 10,697.36 × 5,049.45
4. Step 4: Simplify right side
   7,139.67x = 54,015,759.20
5. Step 5: Solve for x
   x = 54,015,759.20/7,139.67
6. Step 6: Final answer
   x = 7,565.58