Finding the Fourth Proportional to 16,920.42, 25,385.83 and 7,568.31

Step by Step Solution

1. Step 1: Write the proportion equation
   16,920.42 : 25,385.83 = 7,568.31 : x
2. Step 2: Convert to fraction form
   16,920.42/25,385.83 = 7,568.31/x
3. Step 3: Cross multiply
   16,920.42x = 25,385.83 × 7,568.31
4. Step 4: Simplify right side
   16,920.42x = 192,127,666.28
5. Step 5: Solve for x
   x = 192,127,666.28/16,920.42
6. Step 6: Final answer
   x = 11,354.78