Finding the Fourth Proportional to 7,830.67, 10,806.83 and 5,173.42

Step by Step Solution

1. Step 1: Write the proportion equation
   7,830.67 : 10,806.83 = 5,173.42 : x
2. Step 2: Convert to fraction form
   7,830.67/10,806.83 = 5,173.42/x
3. Step 3: Cross multiply
   7,830.67x = 10,806.83 × 5,173.42
4. Step 4: Simplify right side
   7,830.67x = 55,908,270.46
5. Step 5: Solve for x
   x = 55,908,270.46/7,830.67
6. Step 6: Final answer
   x = 7,139.65