Finding the Fourth Proportional to 2,730.72, 4,075.95 and 2,538.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,730.72 : 4,075.95 = 2,538.12 : x
2. Step 2: Convert to fraction form
   2,730.72/4,075.95 = 2,538.12/x
3. Step 3: Cross multiply
   2,730.72x = 4,075.95 × 2,538.12
4. Step 4: Simplify right side
   2,730.72x = 10,345,250.21
5. Step 5: Solve for x
   x = 10,345,250.21/2,730.72
6. Step 6: Final answer
   x = 3,788.47