Finding the Fourth Proportional to 14,406.72, 21,618.72 and 5,173.44

Step by Step Solution

1. Step 1: Write the proportion equation
   14,406.72 : 21,618.72 = 5,173.44 : x
2. Step 2: Convert to fraction form
   14,406.72/21,618.72 = 5,173.44/x
3. Step 3: Cross multiply
   14,406.72x = 21,618.72 × 5,173.44
4. Step 4: Simplify right side
   14,406.72x = 111,843,150.80
5. Step 5: Solve for x
   x = 111,843,150.80/14,406.72
6. Step 6: Final answer
   x = 7,763.26