Finding the Fourth Proportional to 28,622.35, 42,924.78 and 19,794.42

Step by Step Solution

1. Step 1: Write the proportion equation
   28,622.35 : 42,924.78 = 19,794.42 : x
2. Step 2: Convert to fraction form
   28,622.35/42,924.78 = 19,794.42/x
3. Step 3: Cross multiply
   28,622.35x = 42,924.78 × 19,794.42
4. Step 4: Simplify right side
   28,622.35x = 849,671,123.73
5. Step 5: Solve for x
   x = 849,671,123.73/28,622.35
6. Step 6: Final answer
   x = 29,685.58