Finding the Fourth Proportional to 6,188.72, 8,540.33 and 3,499.90

Step by Step Solution

1. Step 1: Write the proportion equation
   6,188.72 : 8,540.33 = 3,499.90 : x
2. Step 2: Convert to fraction form
   6,188.72/8,540.33 = 3,499.90/x
3. Step 3: Cross multiply
   6,188.72x = 8,540.33 × 3,499.90
4. Step 4: Simplify right side
   6,188.72x = 29,890,240.77
5. Step 5: Solve for x
   x = 29,890,240.77/6,188.72
6. Step 6: Final answer
   x = 4,829.80