Finding the Fourth Proportional to 52,784.28, 72,841.68 and 28,910.88

Step by Step Solution

1. Step 1: Write the proportion equation
   52,784.28 : 72,841.68 = 28,910.88 : x
2. Step 2: Convert to fraction form
   52,784.28/72,841.68 = 28,910.88/x
3. Step 3: Cross multiply
   52,784.28x = 72,841.68 × 28,910.88
4. Step 4: Simplify right side
   52,784.28x = 2,105,917,069.48
5. Step 5: Solve for x
   x = 2,105,917,069.48/52,784.28
6. Step 6: Final answer
   x = 39,896.67