Finding the Fourth Proportional to 10,807.72, 16,204.59 and 4,234.57

Step by Step Solution

1. Step 1: Write the proportion equation
   10,807.72 : 16,204.59 = 4,234.57 : x
2. Step 2: Convert to fraction form
   10,807.72/16,204.59 = 4,234.57/x
3. Step 3: Cross multiply
   10,807.72x = 16,204.59 × 4,234.57
4. Step 4: Simplify right side
   10,807.72x = 68,619,430.16
5. Step 5: Solve for x
   x = 68,619,430.16/10,807.72
6. Step 6: Final answer
   x = 6,349.11