Finding the Fourth Proportional to 10,963.32, 16,445.86 and 3,172.28

Step by Step Solution

1. Step 1: Write the proportion equation
   10,963.32 : 16,445.86 = 3,172.28 : x
2. Step 2: Convert to fraction form
   10,963.32/16,445.86 = 3,172.28/x
3. Step 3: Cross multiply
   10,963.32x = 16,445.86 × 3,172.28
4. Step 4: Simplify right side
   10,963.32x = 52,170,872.76
5. Step 5: Solve for x
   x = 52,170,872.76/10,963.32
6. Step 6: Final answer
   x = 4,758.67