Finding the Fourth Proportional to 16,620.72, 24,930.89 and 4,774.78

Step by Step Solution

1. Step 1: Write the proportion equation
   16,620.72 : 24,930.89 = 4,774.78 : x
2. Step 2: Convert to fraction form
   16,620.72/24,930.89 = 4,774.78/x
3. Step 3: Cross multiply
   16,620.72x = 24,930.89 × 4,774.78
4. Step 4: Simplify right side
   16,620.72x = 119,039,491.08
5. Step 5: Solve for x
   x = 119,039,491.08/16,620.72
6. Step 6: Final answer
   x = 7,162.11