Finding the Fourth Proportional to 52,386, 72,290.76 and 28,512.08

Step by Step Solution

1. Step 1: Write the proportion equation
   52,386 : 72,290.76 = 28,512.08 : x
2. Step 2: Convert to fraction form
   52,386/72,290.76 = 28,512.08/x
3. Step 3: Cross multiply
   52,386x = 72,290.76 × 28,512.08
4. Step 4: Simplify right side
   52,386x = 2,061,159,932.38
5. Step 5: Solve for x
   x = 2,061,159,932.38/52,386
6. Step 6: Final answer
   x = 39,345.63