Finding the Fourth Proportional to 10,820.32, 16,234.80 and 5,624.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,820.32 : 16,234.80 = 5,624.80 : x
2. Step 2: Convert to fraction form
   10,820.32/16,234.80 = 5,624.80/x
3. Step 3: Cross multiply
   10,820.32x = 16,234.80 × 5,624.80
4. Step 4: Simplify right side
   10,820.32x = 91,317,503.04
5. Step 5: Solve for x
   x = 91,317,503.04/10,820.32
6. Step 6: Final answer
   x = 8,439.45