Finding the Fourth Proportional to 28,556.55, 42,828.24 and 10,789.10

Step by Step Solution

1. Step 1: Write the proportion equation
   28,556.55 : 42,828.24 = 10,789.10 : x
2. Step 2: Convert to fraction form
   28,556.55/42,828.24 = 10,789.10/x
3. Step 3: Cross multiply
   28,556.55x = 42,828.24 × 10,789.10
4. Step 4: Simplify right side
   28,556.55x = 462,078,151.11
5. Step 5: Solve for x
   x = 462,078,151.11/28,556.55
6. Step 6: Final answer
   x = 16,181.16