Finding the Fourth Proportional to 28,140.73, 42,217.34 and 10,610.71

Step by Step Solution

1. Step 1: Write the proportion equation
   28,140.73 : 42,217.34 = 10,610.71 : x
2. Step 2: Convert to fraction form
   28,140.73/42,217.34 = 10,610.71/x
3. Step 3: Cross multiply
   28,140.73x = 42,217.34 × 10,610.71
4. Step 4: Simplify right side
   28,140.73x = 447,955,951.71
5. Step 5: Solve for x
   x = 447,955,951.71/28,140.73
6. Step 6: Final answer
   x = 15,918.42