Finding the Fourth Proportional to 52,826.10, 72,900.60 and 28,953.78

Step by Step Solution

1. Step 1: Write the proportion equation
   52,826.10 : 72,900.60 = 28,953.78 : x
2. Step 2: Convert to fraction form
   52,826.10/72,900.60 = 28,953.78/x
3. Step 3: Cross multiply
   52,826.10x = 72,900.60 × 28,953.78
4. Step 4: Simplify right side
   52,826.10x = 2,110,747,934.27
5. Step 5: Solve for x
   x = 2,110,747,934.27/52,826.10
6. Step 6: Final answer
   x = 39,956.54