Finding the Fourth Proportional to 17,112.94, 25,672.14 and 5,428.89

Step by Step Solution

1. Step 1: Write the proportion equation
   17,112.94 : 25,672.14 = 5,428.89 : x
2. Step 2: Convert to fraction form
   17,112.94/25,672.14 = 5,428.89/x
3. Step 3: Cross multiply
   17,112.94x = 25,672.14 × 5,428.89
4. Step 4: Simplify right side
   17,112.94x = 139,371,224.12
5. Step 5: Solve for x
   x = 139,371,224.12/17,112.94
6. Step 6: Final answer
   x = 8,144.20