Finding the Fourth Proportional to 21,478.85, 32,198.83 and 7,624.61

Step by Step Solution

1. Step 1: Write the proportion equation
   21,478.85 : 32,198.83 = 7,624.61 : x
2. Step 2: Convert to fraction form
   21,478.85/32,198.83 = 7,624.61/x
3. Step 3: Cross multiply
   21,478.85x = 32,198.83 × 7,624.61
4. Step 4: Simplify right side
   21,478.85x = 245,503,341.15
5. Step 5: Solve for x
   x = 245,503,341.15/21,478.85
6. Step 6: Final answer
   x = 11,430.01