Finding the Fourth Proportional to 28,092.49, 42,124.21 and 10,318.59

Step by Step Solution

1. Step 1: Write the proportion equation
   28,092.49 : 42,124.21 = 10,318.59 : x
2. Step 2: Convert to fraction form
   28,092.49/42,124.21 = 10,318.59/x
3. Step 3: Cross multiply
   28,092.49x = 42,124.21 × 10,318.59
4. Step 4: Simplify right side
   28,092.49x = 434,662,426.27
5. Step 5: Solve for x
   x = 434,662,426.27/28,092.49
6. Step 6: Final answer
   x = 15,472.55