Finding the Fourth Proportional to 5,131.55, 7,081.54 and 2,773.69

Step by Step Solution

1. Step 1: Write the proportion equation
   5,131.55 : 7,081.54 = 2,773.69 : x
2. Step 2: Convert to fraction form
   5,131.55/7,081.54 = 2,773.69/x
3. Step 3: Cross multiply
   5,131.55x = 7,081.54 × 2,773.69
4. Step 4: Simplify right side
   5,131.55x = 19,641,972.04
5. Step 5: Solve for x
   x = 19,641,972.04/5,131.55
6. Step 6: Final answer
   x = 3,827.69