Finding the Fourth Proportional to 10,305.72, 14,221.89 and 5,589.99

Step by Step Solution

1. Step 1: Write the proportion equation
   10,305.72 : 14,221.89 = 5,589.99 : x
2. Step 2: Convert to fraction form
   10,305.72/14,221.89 = 5,589.99/x
3. Step 3: Cross multiply
   10,305.72x = 14,221.89 × 5,589.99
4. Step 4: Simplify right side
   10,305.72x = 79,500,222.88
5. Step 5: Solve for x
   x = 79,500,222.88/10,305.72
6. Step 6: Final answer
   x = 7,714.18