Finding the Fourth Proportional to 52,488.63, 72,435.06 and 28,615.28

Step by Step Solution

1. Step 1: Write the proportion equation
   52,488.63 : 72,435.06 = 28,615.28 : x
2. Step 2: Convert to fraction form
   52,488.63/72,435.06 = 28,615.28/x
3. Step 3: Cross multiply
   52,488.63x = 72,435.06 × 28,615.28
4. Step 4: Simplify right side
   52,488.63x = 2,072,749,161.54
5. Step 5: Solve for x
   x = 2,072,749,161.54/52,488.63
6. Step 6: Final answer
   x = 39,489.49