Finding the Fourth Proportional to 7,109.33, 9,815.46 and 4,870.49

Step by Step Solution

1. Step 1: Write the proportion equation
   7,109.33 : 9,815.46 = 4,870.49 : x
2. Step 2: Convert to fraction form
   7,109.33/9,815.46 = 4,870.49/x
3. Step 3: Cross multiply
   7,109.33x = 9,815.46 × 4,870.49
4. Step 4: Simplify right side
   7,109.33x = 47,806,099.78
5. Step 5: Solve for x
   x = 47,806,099.78/7,109.33
6. Step 6: Final answer
   x = 6,724.42