Finding the Fourth Proportional to 17,128.72, 25,693.14 and 4,816.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,128.72 : 25,693.14 = 4,816.72 : x
2. Step 2: Convert to fraction form
   17,128.72/25,693.14 = 4,816.72/x
3. Step 3: Cross multiply
   17,128.72x = 25,693.14 × 4,816.72
4. Step 4: Simplify right side
   17,128.72x = 123,756,661.30
5. Step 5: Solve for x
   x = 123,756,661.30/17,128.72
6. Step 6: Final answer
   x = 7,225.10