Finding the Fourth Proportional to 52,819.83, 72,891.36 and 28,947.06

Step by Step Solution

1. Step 1: Write the proportion equation
   52,819.83 : 72,891.36 = 28,947.06 : x
2. Step 2: Convert to fraction form
   52,819.83/72,891.36 = 28,947.06/x
3. Step 3: Cross multiply
   52,819.83x = 72,891.36 × 28,947.06
4. Step 4: Simplify right side
   52,819.83x = 2,109,990,571.40
5. Step 5: Solve for x
   x = 2,109,990,571.40/52,819.83
6. Step 6: Final answer
   x = 39,946.94