Finding the Fourth Proportional to 16,710.72, 25,061.76 and 7,928.16

Step by Step Solution

1. Step 1: Write the proportion equation
   16,710.72 : 25,061.76 = 7,928.16 : x
2. Step 2: Convert to fraction form
   16,710.72/25,061.76 = 7,928.16/x
3. Step 3: Cross multiply
   16,710.72x = 25,061.76 × 7,928.16
4. Step 4: Simplify right side
   16,710.72x = 198,693,643.16
5. Step 5: Solve for x
   x = 198,693,643.16/16,710.72
6. Step 6: Final answer
   x = 11,890.19