Finding the Fourth Proportional to 14,406.24, 21,612.24 and 5,172.96

Step by Step Solution

1. Step 1: Write the proportion equation
   14,406.24 : 21,612.24 = 5,172.96 : x
2. Step 2: Convert to fraction form
   14,406.24/21,612.24 = 5,172.96/x
3. Step 3: Cross multiply
   14,406.24x = 21,612.24 × 5,172.96
4. Step 4: Simplify right side
   14,406.24x = 111,799,253.03
5. Step 5: Solve for x
   x = 111,799,253.03/14,406.24
6. Step 6: Final answer
   x = 7,760.47