Finding the Fourth Proportional to 16,945.72, 25,416.42 and 5,259.04

Step by Step Solution

1. Step 1: Write the proportion equation
   16,945.72 : 25,416.42 = 5,259.04 : x
2. Step 2: Convert to fraction form
   16,945.72/25,416.42 = 5,259.04/x
3. Step 3: Cross multiply
   16,945.72x = 25,416.42 × 5,259.04
4. Step 4: Simplify right side
   16,945.72x = 133,665,969.44
5. Step 5: Solve for x
   x = 133,665,969.44/16,945.72
6. Step 6: Final answer
   x = 7,887.89