Finding the Fourth Proportional to 28,978.26, 43,468.47 and 10,260.27

Step by Step Solution

1. Step 1: Write the proportion equation
   28,978.26 : 43,468.47 = 10,260.27 : x
2. Step 2: Convert to fraction form
   28,978.26/43,468.47 = 10,260.27/x
3. Step 3: Cross multiply
   28,978.26x = 43,468.47 × 10,260.27
4. Step 4: Simplify right side
   28,978.26x = 445,998,238.69
5. Step 5: Solve for x
   x = 445,998,238.69/28,978.26
6. Step 6: Final answer
   x = 15,390.79