Finding the Fourth Proportional to 6,604.72, 9,109.48 and 4,215.42

Step by Step Solution

1. Step 1: Write the proportion equation
   6,604.72 : 9,109.48 = 4,215.42 : x
2. Step 2: Convert to fraction form
   6,604.72/9,109.48 = 4,215.42/x
3. Step 3: Cross multiply
   6,604.72x = 9,109.48 × 4,215.42
4. Step 4: Simplify right side
   6,604.72x = 38,400,284.18
5. Step 5: Solve for x
   x = 38,400,284.18/6,604.72
6. Step 6: Final answer
   x = 5,814.07