Finding the Fourth Proportional to 28,514.48, 42,768.38 and 10,972.04

Step by Step Solution

1. Step 1: Write the proportion equation
   28,514.48 : 42,768.38 = 10,972.04 : x
2. Step 2: Convert to fraction form
   28,514.48/42,768.38 = 10,972.04/x
3. Step 3: Cross multiply
   28,514.48x = 42,768.38 × 10,972.04
4. Step 4: Simplify right side
   28,514.48x = 469,256,376.10
5. Step 5: Solve for x
   x = 469,256,376.10/28,514.48
6. Step 6: Final answer
   x = 16,456.77