Finding the Fourth Proportional to 7,019.74, 9,685.92 and 5,691.12

Step by Step Solution

1. Step 1: Write the proportion equation
   7,019.74 : 9,685.92 = 5,691.12 : x
2. Step 2: Convert to fraction form
   7,019.74/9,685.92 = 5,691.12/x
3. Step 3: Cross multiply
   7,019.74x = 9,685.92 × 5,691.12
4. Step 4: Simplify right side
   7,019.74x = 55,123,684.60
5. Step 5: Solve for x
   x = 55,123,684.60/7,019.74
6. Step 6: Final answer
   x = 7,852.67