Finding the Fourth Proportional to 52,636.78, 72,638.67 and 28,763.46

Step by Step Solution

1. Step 1: Write the proportion equation
   52,636.78 : 72,638.67 = 28,763.46 : x
2. Step 2: Convert to fraction form
   52,636.78/72,638.67 = 28,763.46/x
3. Step 3: Cross multiply
   52,636.78x = 72,638.67 × 28,763.46
4. Step 4: Simplify right side
   52,636.78x = 2,089,339,479.00
5. Step 5: Solve for x
   x = 2,089,339,479.00/52,636.78
6. Step 6: Final answer
   x = 39,693.53