Finding the Fourth Proportional to 33,205.68, 49,830.12 and 12,429

Step by Step Solution

1. Step 1: Write the proportion equation
   33,205.68 : 49,830.12 = 12,429 : x
2. Step 2: Convert to fraction form
   33,205.68/49,830.12 = 12,429/x
3. Step 3: Cross multiply
   33,205.68x = 49,830.12 × 12,429
4. Step 4: Simplify right side
   33,205.68x = 619,338,561.48
5. Step 5: Solve for x
   x = 619,338,561.48/33,205.68
6. Step 6: Final answer
   x = 18,651.58