Finding the Fourth Proportional to 6,174.98, 8,521.96 and 3,521.78

Step by Step Solution

1. Step 1: Write the proportion equation
   6,174.98 : 8,521.96 = 3,521.78 : x
2. Step 2: Convert to fraction form
   6,174.98/8,521.96 = 3,521.78/x
3. Step 3: Cross multiply
   6,174.98x = 8,521.96 × 3,521.78
4. Step 4: Simplify right side
   6,174.98x = 30,012,468.29
5. Step 5: Solve for x
   x = 30,012,468.29/6,174.98
6. Step 6: Final answer
   x = 4,860.33