Finding the Fourth Proportional to 18,828.52, 28,105.25 and 17,458

Step by Step Solution

1. Step 1: Write the proportion equation
   18,828.52 : 28,105.25 = 17,458 : x
2. Step 2: Convert to fraction form
   18,828.52/28,105.25 = 17,458/x
3. Step 3: Cross multiply
   18,828.52x = 28,105.25 × 17,458
4. Step 4: Simplify right side
   18,828.52x = 490,661,454.50
5. Step 5: Solve for x
   x = 490,661,454.50/18,828.52
6. Step 6: Final answer
   x = 26,059.48