Finding the Fourth Proportional to 16,728.32, 23,085.05 and 9,654.74

Step by Step Solution

1. Step 1: Write the proportion equation
   16,728.32 : 23,085.05 = 9,654.74 : x
2. Step 2: Convert to fraction form
   16,728.32/23,085.05 = 9,654.74/x
3. Step 3: Cross multiply
   16,728.32x = 23,085.05 × 9,654.74
4. Step 4: Simplify right side
   16,728.32x = 222,880,040.21
5. Step 5: Solve for x
   x = 222,880,040.21/16,728.32
6. Step 6: Final answer
   x = 13,323.52