Finding the Fourth Proportional to 52,409.78, 72,323.33 and 28,536.40

Step by Step Solution

1. Step 1: Write the proportion equation
   52,409.78 : 72,323.33 = 28,536.40 : x
2. Step 2: Convert to fraction form
   52,409.78/72,323.33 = 28,536.40/x
3. Step 3: Cross multiply
   52,409.78x = 72,323.33 × 28,536.40
4. Step 4: Simplify right side
   52,409.78x = 2,063,847,582.45
5. Step 5: Solve for x
   x = 2,063,847,582.45/52,409.78
6. Step 6: Final answer
   x = 39,379.05