Finding the Fourth Proportional to 52,456.90, 72,389.58 and 28,583.74

Step by Step Solution

1. Step 1: Write the proportion equation
   52,456.90 : 72,389.58 = 28,583.74 : x
2. Step 2: Convert to fraction form
   52,456.90/72,389.58 = 28,583.74/x
3. Step 3: Cross multiply
   52,456.90x = 72,389.58 × 28,583.74
4. Step 4: Simplify right side
   52,456.90x = 2,069,164,933.43
5. Step 5: Solve for x
   x = 2,069,164,933.43/52,456.90
6. Step 6: Final answer
   x = 39,445.05