Finding the Fourth Proportional to 16,728.76, 23,085.72 and 9,276.76

Step by Step Solution

1. Step 1: Write the proportion equation
   16,728.76 : 23,085.72 = 9,276.76 : x
2. Step 2: Convert to fraction form
   16,728.76/23,085.72 = 9,276.76/x
3. Step 3: Cross multiply
   16,728.76x = 23,085.72 × 9,276.76
4. Step 4: Simplify right side
   16,728.76x = 214,160,683.87
5. Step 5: Solve for x
   x = 214,160,683.87/16,728.76
6. Step 6: Final answer
   x = 12,801.95