Finding the Fourth Proportional to 10,808.15, 14,927.55 and 7,265.21

Step by Step Solution

1. Step 1: Write the proportion equation
   10,808.15 : 14,927.55 = 7,265.21 : x
2. Step 2: Convert to fraction form
   10,808.15/14,927.55 = 7,265.21/x
3. Step 3: Cross multiply
   10,808.15x = 14,927.55 × 7,265.21
4. Step 4: Simplify right side
   10,808.15x = 108,451,674.57
5. Step 5: Solve for x
   x = 108,451,674.57/10,808.15
6. Step 6: Final answer
   x = 10,034.25