Finding the Fourth Proportional to 5,774.72, 7,963.80 and 3,784.55

Step by Step Solution

1. Step 1: Write the proportion equation
   5,774.72 : 7,963.80 = 3,784.55 : x
2. Step 2: Convert to fraction form
   5,774.72/7,963.80 = 3,784.55/x
3. Step 3: Cross multiply
   5,774.72x = 7,963.80 × 3,784.55
4. Step 4: Simplify right side
   5,774.72x = 30,139,399.29
5. Step 5: Solve for x
   x = 30,139,399.29/5,774.72
6. Step 6: Final answer
   x = 5,219.20