Finding the Fourth Proportional to 10,849.76, 14,976.32 and 7,715.04

Step by Step Solution

1. Step 1: Write the proportion equation
   10,849.76 : 14,976.32 = 7,715.04 : x
2. Step 2: Convert to fraction form
   10,849.76/14,976.32 = 7,715.04/x
3. Step 3: Cross multiply
   10,849.76x = 14,976.32 × 7,715.04
4. Step 4: Simplify right side
   10,849.76x = 115,542,907.85
5. Step 5: Solve for x
   x = 115,542,907.85/10,849.76
6. Step 6: Final answer
   x = 10,649.35