Finding the Fourth Proportional to 5,877.88, 8,111.20 and 3,521.32

Step by Step Solution

1. Step 1: Write the proportion equation
   5,877.88 : 8,111.20 = 3,521.32 : x
2. Step 2: Convert to fraction form
   5,877.88/8,111.20 = 3,521.32/x
3. Step 3: Cross multiply
   5,877.88x = 8,111.20 × 3,521.32
4. Step 4: Simplify right side
   5,877.88x = 28,562,130.78
5. Step 5: Solve for x
   x = 28,562,130.78/5,877.88
6. Step 6: Final answer
   x = 4,859.26