Finding the Fourth Proportional to 12,365.61, 17,059.79 and 7,057.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,365.61 : 17,059.79 = 7,057.62 : x
2. Step 2: Convert to fraction form
   12,365.61/17,059.79 = 7,057.62/x
3. Step 3: Cross multiply
   12,365.61x = 17,059.79 × 7,057.62
4. Step 4: Simplify right side
   12,365.61x = 120,401,479.81
5. Step 5: Solve for x
   x = 120,401,479.81/12,365.61
6. Step 6: Final answer
   x = 9,736.80