Finding the Fourth Proportional to 3,926.52, 5,878.64 and 3,556.99

Step by Step Solution

1. Step 1: Write the proportion equation
   3,926.52 : 5,878.64 = 3,556.99 : x
2. Step 2: Convert to fraction form
   3,926.52/5,878.64 = 3,556.99/x
3. Step 3: Cross multiply
   3,926.52x = 5,878.64 × 3,556.99
4. Step 4: Simplify right side
   3,926.52x = 20,910,279.93
5. Step 5: Solve for x
   x = 20,910,279.93/3,926.52
6. Step 6: Final answer
   x = 5,325.40