Finding the Fourth Proportional to 5,131.25, 7,081.80 and 2,893.83

Step by Step Solution

1. Step 1: Write the proportion equation
   5,131.25 : 7,081.80 = 2,893.83 : x
2. Step 2: Convert to fraction form
   5,131.25/7,081.80 = 2,893.83/x
3. Step 3: Cross multiply
   5,131.25x = 7,081.80 × 2,893.83
4. Step 4: Simplify right side
   5,131.25x = 20,493,525.29
5. Step 5: Solve for x
   x = 20,493,525.29/5,131.25
6. Step 6: Final answer
   x = 3,993.86