Finding the Fourth Proportional to 5,538.72, 8,308.55 and 2,763.57

Step by Step Solution

1. Step 1: Write the proportion equation
   5,538.72 : 8,308.55 = 2,763.57 : x
2. Step 2: Convert to fraction form
   5,538.72/8,308.55 = 2,763.57/x
3. Step 3: Cross multiply
   5,538.72x = 8,308.55 × 2,763.57
4. Step 4: Simplify right side
   5,538.72x = 22,961,259.52
5. Step 5: Solve for x
   x = 22,961,259.52/5,538.72
6. Step 6: Final answer
   x = 4,145.59