Finding the Fourth Proportional to 5,131.77, 7,081.83 and 2,773.91

Step by Step Solution

1. Step 1: Write the proportion equation
   5,131.77 : 7,081.83 = 2,773.91 : x
2. Step 2: Convert to fraction form
   5,131.77/7,081.83 = 2,773.91/x
3. Step 3: Cross multiply
   5,131.77x = 7,081.83 × 2,773.91
4. Step 4: Simplify right side
   5,131.77x = 19,644,376.76
5. Step 5: Solve for x
   x = 19,644,376.76/5,131.77
6. Step 6: Final answer
   x = 3,827.99