Finding the Fourth Proportional to 28,154.29, 42,243.69 and 17,648.39

Step by Step Solution

1. Step 1: Write the proportion equation
   28,154.29 : 42,243.69 = 17,648.39 : x
2. Step 2: Convert to fraction form
   28,154.29/42,243.69 = 17,648.39/x
3. Step 3: Cross multiply
   28,154.29x = 42,243.69 × 17,648.39
4. Step 4: Simplify right side
   28,154.29x = 745,533,116.16
5. Step 5: Solve for x
   x = 745,533,116.16/28,154.29
6. Step 6: Final answer
   x = 26,480.27