Finding the Fourth Proportional to 50,569.50, 69,788.10 and 28,213.50

Step by Step Solution

1. Step 1: Write the proportion equation
   50,569.50 : 69,788.10 = 28,213.50 : x
2. Step 2: Convert to fraction form
   50,569.50/69,788.10 = 28,213.50/x
3. Step 3: Cross multiply
   50,569.50x = 69,788.10 × 28,213.50
4. Step 4: Simplify right side
   50,569.50x = 1,968,966,559.35
5. Step 5: Solve for x
   x = 1,968,966,559.35/50,569.50
6. Step 6: Final answer
   x = 38,935.85