Finding the Fourth Proportional to 12,558.72, 17,330.73 and 6,969.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,558.72 : 17,330.73 = 6,969.72 : x
2. Step 2: Convert to fraction form
   12,558.72/17,330.73 = 6,969.72/x
3. Step 3: Cross multiply
   12,558.72x = 17,330.73 × 6,969.72
4. Step 4: Simplify right side
   12,558.72x = 120,790,335.50
5. Step 5: Solve for x
   x = 120,790,335.50/12,558.72
6. Step 6: Final answer
   x = 9,618.05