Finding the Fourth Proportional to 52,784.08, 72,838.92 and 28,906

Step by Step Solution

1. Step 1: Write the proportion equation
   52,784.08 : 72,838.92 = 28,906 : x
2. Step 2: Convert to fraction form
   52,784.08/72,838.92 = 28,906/x
3. Step 3: Cross multiply
   52,784.08x = 72,838.92 × 28,906
4. Step 4: Simplify right side
   52,784.08x = 2,105,481,821.52
5. Step 5: Solve for x
   x = 2,105,481,821.52/52,784.08
6. Step 6: Final answer
   x = 39,888.58