Finding the Fourth Proportional to 52,385.94, 72,292.61 and 28,512.79

Step by Step Solution

1. Step 1: Write the proportion equation
   52,385.94 : 72,292.61 = 28,512.79 : x
2. Step 2: Convert to fraction form
   52,385.94/72,292.61 = 28,512.79/x
3. Step 3: Cross multiply
   52,385.94x = 72,292.61 × 28,512.79
4. Step 4: Simplify right side
   52,385.94x = 2,061,263,684.19
5. Step 5: Solve for x
   x = 2,061,263,684.19/52,385.94
6. Step 6: Final answer
   x = 39,347.65