Finding the Fourth Proportional to 10,911.72, 16,364.78 and 4,672.74

Step by Step Solution

1. Step 1: Write the proportion equation
   10,911.72 : 16,364.78 = 4,672.74 : x
2. Step 2: Convert to fraction form
   10,911.72/16,364.78 = 4,672.74/x
3. Step 3: Cross multiply
   10,911.72x = 16,364.78 × 4,672.74
4. Step 4: Simplify right side
   10,911.72x = 76,468,362.10
5. Step 5: Solve for x
   x = 76,468,362.10/10,911.72
6. Step 6: Final answer
   x = 7,007.91