Finding the Fourth Proportional to 5,091.90, 7,025.88 and 2,853.80

Step by Step Solution

1. Step 1: Write the proportion equation
   5,091.90 : 7,025.88 = 2,853.80 : x
2. Step 2: Convert to fraction form
   5,091.90/7,025.88 = 2,853.80/x
3. Step 3: Cross multiply
   5,091.90x = 7,025.88 × 2,853.80
4. Step 4: Simplify right side
   5,091.90x = 20,050,456.34
5. Step 5: Solve for x
   x = 20,050,456.34/5,091.90
6. Step 6: Final answer
   x = 3,937.72