Finding the Fourth Proportional to 5,191.79, 7,164.72 and 2,833.88

Step by Step Solution

1. Step 1: Write the proportion equation
   5,191.79 : 7,164.72 = 2,833.88 : x
2. Step 2: Convert to fraction form
   5,191.79/7,164.72 = 2,833.88/x
3. Step 3: Cross multiply
   5,191.79x = 7,164.72 × 2,833.88
4. Step 4: Simplify right side
   5,191.79x = 20,303,920.89
5. Step 5: Solve for x
   x = 20,303,920.89/5,191.79
6. Step 6: Final answer
   x = 3,910.78