Finding the Fourth Proportional to 52,832.69, 72,908.78 and 28,960.37

Step by Step Solution

1. Step 1: Write the proportion equation
   52,832.69 : 72,908.78 = 28,960.37 : x
2. Step 2: Convert to fraction form
   52,832.69/72,908.78 = 28,960.37/x
3. Step 3: Cross multiply
   52,832.69x = 72,908.78 × 28,960.37
4. Step 4: Simplify right side
   52,832.69x = 2,111,464,735.70
5. Step 5: Solve for x
   x = 2,111,464,735.70/52,832.69
6. Step 6: Final answer
   x = 39,965.12