Finding the Fourth Proportional to 14,056.72, 21,087.36 and 5,292.28

Step by Step Solution

1. Step 1: Write the proportion equation
   14,056.72 : 21,087.36 = 5,292.28 : x
2. Step 2: Convert to fraction form
   14,056.72/21,087.36 = 5,292.28/x
3. Step 3: Cross multiply
   14,056.72x = 21,087.36 × 5,292.28
4. Step 4: Simplify right side
   14,056.72x = 111,600,213.58
5. Step 5: Solve for x
   x = 111,600,213.58/14,056.72
6. Step 6: Final answer
   x = 7,939.28