Finding the Fourth Proportional to 12,476.28, 17,216.58 and 7,760.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,476.28 : 17,216.58 = 7,760.52 : x
2. Step 2: Convert to fraction form
   12,476.28/17,216.58 = 7,760.52/x
3. Step 3: Cross multiply
   12,476.28x = 17,216.58 × 7,760.52
4. Step 4: Simplify right side
   12,476.28x = 133,609,613.42
5. Step 5: Solve for x
   x = 133,609,613.42/12,476.28
6. Step 6: Final answer
   x = 10,709.09