Finding the Fourth Proportional to 52,738.01, 72,778.64 and 28,538.97

Step by Step Solution

1. Step 1: Write the proportion equation
   52,738.01 : 72,778.64 = 28,538.97 : x
2. Step 2: Convert to fraction form
   52,738.01/72,778.64 = 28,538.97/x
3. Step 3: Cross multiply
   52,738.01x = 72,778.64 × 28,538.97
4. Step 4: Simplify right side
   52,738.01x = 2,077,027,698.30
5. Step 5: Solve for x
   x = 2,077,027,698.30/52,738.01
6. Step 6: Final answer
   x = 39,383.88