Finding the Fourth Proportional to 33,172.96, 49,759.50 and 9,815.80

Step by Step Solution

1. Step 1: Write the proportion equation
   33,172.96 : 49,759.50 = 9,815.80 : x
2. Step 2: Convert to fraction form
   33,172.96/49,759.50 = 9,815.80/x
3. Step 3: Cross multiply
   33,172.96x = 49,759.50 × 9,815.80
4. Step 4: Simplify right side
   33,172.96x = 488,429,300.10
5. Step 5: Solve for x
   x = 488,429,300.10/33,172.96
6. Step 6: Final answer
   x = 14,723.72