Finding the Fourth Proportional to 12,479.62, 17,234.01 and 7,766.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,479.62 : 17,234.01 = 7,766.02 : x
2. Step 2: Convert to fraction form
   12,479.62/17,234.01 = 7,766.02/x
3. Step 3: Cross multiply
   12,479.62x = 17,234.01 × 7,766.02
4. Step 4: Simplify right side
   12,479.62x = 133,839,666.34
5. Step 5: Solve for x
   x = 133,839,666.34/12,479.62
6. Step 6: Final answer
   x = 10,724.66