Finding the Fourth Proportional to 10,857.30, 16,280.28 and 5,008.92

Step by Step Solution

1. Step 1: Write the proportion equation
   10,857.30 : 16,280.28 = 5,008.92 : x
2. Step 2: Convert to fraction form
   10,857.30/16,280.28 = 5,008.92/x
3. Step 3: Cross multiply
   10,857.30x = 16,280.28 × 5,008.92
4. Step 4: Simplify right side
   10,857.30x = 81,546,620.10
5. Step 5: Solve for x
   x = 81,546,620.10/10,857.30
6. Step 6: Final answer
   x = 7,510.76