Finding the Fourth Proportional to 14,089.20, 21,142.56 and 5,322.96

Step by Step Solution

1. Step 1: Write the proportion equation
   14,089.20 : 21,142.56 = 5,322.96 : x
2. Step 2: Convert to fraction form
   14,089.20/21,142.56 = 5,322.96/x
3. Step 3: Cross multiply
   14,089.20x = 21,142.56 × 5,322.96
4. Step 4: Simplify right side
   14,089.20x = 112,541,001.18
5. Step 5: Solve for x
   x = 112,541,001.18/14,089.20
6. Step 6: Final answer
   x = 7,987.75