Finding the Fourth Proportional to 28,978.92, 43,487.82 and 10,259

Step by Step Solution

1. Step 1: Write the proportion equation
   28,978.92 : 43,487.82 = 10,259 : x
2. Step 2: Convert to fraction form
   28,978.92/43,487.82 = 10,259/x
3. Step 3: Cross multiply
   28,978.92x = 43,487.82 × 10,259
4. Step 4: Simplify right side
   28,978.92x = 446,141,545.38
5. Step 5: Solve for x
   x = 446,141,545.38/28,978.92
6. Step 6: Final answer
   x = 15,395.38