Finding the Fourth Proportional to 2,658.63, 3,987.41 and 2,526.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,658.63 : 3,987.41 = 2,526.91 : x
2. Step 2: Convert to fraction form
   2,658.63/3,987.41 = 2,526.91/x
3. Step 3: Cross multiply
   2,658.63x = 3,987.41 × 2,526.91
4. Step 4: Simplify right side
   2,658.63x = 10,075,822.55
5. Step 5: Solve for x
   x = 10,075,822.55/2,658.63
6. Step 6: Final answer
   x = 3,789.86