Finding the Fourth Proportional to 52,784.58, 72,839.61 and 28,906.50

Step by Step Solution

1. Step 1: Write the proportion equation
   52,784.58 : 72,839.61 = 28,906.50 : x
2. Step 2: Convert to fraction form
   52,784.58/72,839.61 = 28,906.50/x
3. Step 3: Cross multiply
   52,784.58x = 72,839.61 × 28,906.50
4. Step 4: Simplify right side
   52,784.58x = 2,105,538,186.47
5. Step 5: Solve for x
   x = 2,105,538,186.47/52,784.58
6. Step 6: Final answer
   x = 39,889.27