Finding the Fourth Proportional to 52,638.03, 72,638.37 and 28,765.53

Step by Step Solution

1. Step 1: Write the proportion equation
   52,638.03 : 72,638.37 = 28,765.53 : x
2. Step 2: Convert to fraction form
   52,638.03/72,638.37 = 28,765.53/x
3. Step 3: Cross multiply
   52,638.03x = 72,638.37 × 28,765.53
4. Step 4: Simplify right side
   52,638.03x = 2,089,481,211.39
5. Step 5: Solve for x
   x = 2,089,481,211.39/52,638.03
6. Step 6: Final answer
   x = 39,695.28