Finding the Fourth Proportional to 52,769.40, 72,821.82 and 28,896.06

Step by Step Solution

1. Step 1: Write the proportion equation
   52,769.40 : 72,821.82 = 28,896.06 : x
2. Step 2: Convert to fraction form
   52,769.40/72,821.82 = 28,896.06/x
3. Step 3: Cross multiply
   52,769.40x = 72,821.82 × 28,896.06
4. Step 4: Simplify right side
   52,769.40x = 2,104,263,680.03
5. Step 5: Solve for x
   x = 2,104,263,680.03/52,769.40
6. Step 6: Final answer
   x = 39,876.59