Finding the Fourth Proportional to 52,780.05, 72,837.87 and 28,908.27

Step by Step Solution

1. Step 1: Write the proportion equation
   52,780.05 : 72,837.87 = 28,908.27 : x
2. Step 2: Convert to fraction form
   52,780.05/72,837.87 = 28,908.27/x
3. Step 3: Cross multiply
   52,780.05x = 72,837.87 × 28,908.27
4. Step 4: Simplify right side
   52,780.05x = 2,105,616,812.18
5. Step 5: Solve for x
   x = 2,105,616,812.18/52,780.05
6. Step 6: Final answer
   x = 39,894.18