Finding the Fourth Proportional to 52,262.72, 72,120.32 and 28,388.72

Step by Step Solution

1. Step 1: Write the proportion equation
   52,262.72 : 72,120.32 = 28,388.72 : x
2. Step 2: Convert to fraction form
   52,262.72/72,120.32 = 28,388.72/x
3. Step 3: Cross multiply
   52,262.72x = 72,120.32 × 28,388.72
4. Step 4: Simplify right side
   52,262.72x = 2,047,403,570.79
5. Step 5: Solve for x
   x = 2,047,403,570.79/52,262.72
6. Step 6: Final answer
   x = 39,175.22