Finding the Fourth Proportional to 10,789.66, 16,185.99 and 4,865.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,789.66 : 16,185.99 = 4,865.72 : x
2. Step 2: Convert to fraction form
   10,789.66/16,185.99 = 4,865.72/x
3. Step 3: Cross multiply
   10,789.66x = 16,185.99 × 4,865.72
4. Step 4: Simplify right side
   10,789.66x = 78,756,495.26
5. Step 5: Solve for x
   x = 78,756,495.26/10,789.66
6. Step 6: Final answer
   x = 7,299.26