Finding the Fourth Proportional to 28,426.78, 42,627.21 and 16,743.34

Step by Step Solution

1. Step 1: Write the proportion equation
   28,426.78 : 42,627.21 = 16,743.34 : x
2. Step 2: Convert to fraction form
   28,426.78/42,627.21 = 16,743.34/x
3. Step 3: Cross multiply
   28,426.78x = 42,627.21 × 16,743.34
4. Step 4: Simplify right side
   28,426.78x = 713,721,870.28
5. Step 5: Solve for x
   x = 713,721,870.28/28,426.78
6. Step 6: Final answer
   x = 25,107.38