Finding the Fourth Proportional to 5,417.98, 8,118.46 and 4,188.40

Step by Step Solution

1. Step 1: Write the proportion equation
   5,417.98 : 8,118.46 = 4,188.40 : x
2. Step 2: Convert to fraction form
   5,417.98/8,118.46 = 4,188.40/x
3. Step 3: Cross multiply
   5,417.98x = 8,118.46 × 4,188.40
4. Step 4: Simplify right side
   5,417.98x = 34,003,357.86
5. Step 5: Solve for x
   x = 34,003,357.86/5,417.98
6. Step 6: Final answer
   x = 6,276.02