Finding the Fourth Proportional to 5,131.40, 7,081.36 and 2,773.53

Step by Step Solution

1. Step 1: Write the proportion equation
   5,131.40 : 7,081.36 = 2,773.53 : x
2. Step 2: Convert to fraction form
   5,131.40/7,081.36 = 2,773.53/x
3. Step 3: Cross multiply
   5,131.40x = 7,081.36 × 2,773.53
4. Step 4: Simplify right side
   5,131.40x = 19,640,357.47
5. Step 5: Solve for x
   x = 19,640,357.47/5,131.40
6. Step 6: Final answer
   x = 3,827.49