Finding the Fourth Proportional to 17,112.50, 25,669.68 and 5,426.64

Step by Step Solution

1. Step 1: Write the proportion equation
   17,112.50 : 25,669.68 = 5,426.64 : x
2. Step 2: Convert to fraction form
   17,112.50/25,669.68 = 5,426.64/x
3. Step 3: Cross multiply
   17,112.50x = 25,669.68 × 5,426.64
4. Step 4: Simplify right side
   17,112.50x = 139,300,112.28
5. Step 5: Solve for x
   x = 139,300,112.28/17,112.50
6. Step 6: Final answer
   x = 8,140.25