Finding the Fourth Proportional to 14,644.28, 21,969.90 and 4,783.55

Step by Step Solution

1. Step 1: Write the proportion equation
   14,644.28 : 21,969.90 = 4,783.55 : x
2. Step 2: Convert to fraction form
   14,644.28/21,969.90 = 4,783.55/x
3. Step 3: Cross multiply
   14,644.28x = 21,969.90 × 4,783.55
4. Step 4: Simplify right side
   14,644.28x = 105,094,005.30
5. Step 5: Solve for x
   x = 105,094,005.30/14,644.28
6. Step 6: Final answer
   x = 7,176.45