Finding the Fourth Proportional to 10,687.72, 16,017.61 and 5,746.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,687.72 : 16,017.61 = 5,746.72 : x
2. Step 2: Convert to fraction form
   10,687.72/16,017.61 = 5,746.72/x
3. Step 3: Cross multiply
   10,687.72x = 16,017.61 × 5,746.72
4. Step 4: Simplify right side
   10,687.72x = 92,048,719.74
5. Step 5: Solve for x
   x = 92,048,719.74/10,687.72
6. Step 6: Final answer
   x = 8,612.57