Finding the Fourth Proportional to 52,635.72, 72,637.56 and 28,762.80

Step by Step Solution

1. Step 1: Write the proportion equation
   52,635.72 : 72,637.56 = 28,762.80 : x
2. Step 2: Convert to fraction form
   52,635.72/72,637.56 = 28,762.80/x
3. Step 3: Cross multiply
   52,635.72x = 72,637.56 × 28,762.80
4. Step 4: Simplify right side
   52,635.72x = 2,089,259,610.77
5. Step 5: Solve for x
   x = 2,089,259,610.77/52,635.72
6. Step 6: Final answer
   x = 39,692.81