Finding the Fourth Proportional to 5,123.09, 7,069.86 and 2,884.92

Step by Step Solution

1. Step 1: Write the proportion equation
   5,123.09 : 7,069.86 = 2,884.92 : x
2. Step 2: Convert to fraction form
   5,123.09/7,069.86 = 2,884.92/x
3. Step 3: Cross multiply
   5,123.09x = 7,069.86 × 2,884.92
4. Step 4: Simplify right side
   5,123.09x = 20,395,945.89
5. Step 5: Solve for x
   x = 20,395,945.89/5,123.09
6. Step 6: Final answer
   x = 3,981.18