Finding the Fourth Proportional to 42,556.53, 58,684.46 and 28,211.37

Step by Step Solution

1. Step 1: Write the proportion equation
   42,556.53 : 58,684.46 = 28,211.37 : x
2. Step 2: Convert to fraction form
   42,556.53/58,684.46 = 28,211.37/x
3. Step 3: Cross multiply
   42,556.53x = 58,684.46 × 28,211.37
4. Step 4: Simplify right side
   42,556.53x = 1,655,568,873.25
5. Step 5: Solve for x
   x = 1,655,568,873.25/42,556.53
6. Step 6: Final answer
   x = 38,902.82