Finding the Fourth Proportional to 52,636.72, 72,638.94 and 28,763.80

Step by Step Solution

1. Step 1: Write the proportion equation
   52,636.72 : 72,638.94 = 28,763.80 : x
2. Step 2: Convert to fraction form
   52,636.72/72,638.94 = 28,763.80/x
3. Step 3: Cross multiply
   52,636.72x = 72,638.94 × 28,763.80
4. Step 4: Simplify right side
   52,636.72x = 2,089,371,942.37
5. Step 5: Solve for x
   x = 2,089,371,942.37/52,636.72
6. Step 6: Final answer
   x = 39,694.19