Finding the Fourth Proportional to 6,111.99, 8,429.91 and 4,226.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,111.99 : 8,429.91 = 4,226.72 : x
2. Step 2: Convert to fraction form
   6,111.99/8,429.91 = 4,226.72/x
3. Step 3: Cross multiply
   6,111.99x = 8,429.91 × 4,226.72
4. Step 4: Simplify right side
   6,111.99x = 35,630,827.05
5. Step 5: Solve for x
   x = 35,630,827.05/6,111.99
6. Step 6: Final answer
   x = 5,829.66