Finding the Fourth Proportional to 5,127.42, 7,075.76 and 2,889.51

Step by Step Solution

1. Step 1: Write the proportion equation
   5,127.42 : 7,075.76 = 2,889.51 : x
2. Step 2: Convert to fraction form
   5,127.42/7,075.76 = 2,889.51/x
3. Step 3: Cross multiply
   5,127.42x = 7,075.76 × 2,889.51
4. Step 4: Simplify right side
   5,127.42x = 20,445,464.83
5. Step 5: Solve for x
   x = 20,445,464.83/5,127.42
6. Step 6: Final answer
   x = 3,987.48