Finding the Fourth Proportional to 21,007.16, 31,491.27 and 7,849.52

Step by Step Solution

1. Step 1: Write the proportion equation
   21,007.16 : 31,491.27 = 7,849.52 : x
2. Step 2: Convert to fraction form
   21,007.16/31,491.27 = 7,849.52/x
3. Step 3: Cross multiply
   21,007.16x = 31,491.27 × 7,849.52
4. Step 4: Simplify right side
   21,007.16x = 247,191,353.69
5. Step 5: Solve for x
   x = 247,191,353.69/21,007.16
6. Step 6: Final answer
   x = 11,767.00