Finding the Fourth Proportional to 52,391.52, 72,300.32 and 28,518.36

Step by Step Solution

1. Step 1: Write the proportion equation
   52,391.52 : 72,300.32 = 28,518.36 : x
2. Step 2: Convert to fraction form
   52,391.52/72,300.32 = 28,518.36/x
3. Step 3: Cross multiply
   52,391.52x = 72,300.32 × 28,518.36
4. Step 4: Simplify right side
   52,391.52x = 2,061,886,411.28
5. Step 5: Solve for x
   x = 2,061,886,411.28/52,391.52
6. Step 6: Final answer
   x = 39,355.35