Finding the Fourth Proportional to 10,820.56, 16,234.72 and 4,251.22

Step by Step Solution

1. Step 1: Write the proportion equation
   10,820.56 : 16,234.72 = 4,251.22 : x
2. Step 2: Convert to fraction form
   10,820.56/16,234.72 = 4,251.22/x
3. Step 3: Cross multiply
   10,820.56x = 16,234.72 × 4,251.22
4. Step 4: Simplify right side
   10,820.56x = 69,017,366.36
5. Step 5: Solve for x
   x = 69,017,366.36/10,820.56
6. Step 6: Final answer
   x = 6,378.35