Finding the Fourth Proportional to 12,969.60, 17,896.32 and 7,662.24

Step by Step Solution

1. Step 1: Write the proportion equation
   12,969.60 : 17,896.32 = 7,662.24 : x
2. Step 2: Convert to fraction form
   12,969.60/17,896.32 = 7,662.24/x
3. Step 3: Cross multiply
   12,969.60x = 17,896.32 × 7,662.24
4. Step 4: Simplify right side
   12,969.60x = 137,125,898.96
5. Step 5: Solve for x
   x = 137,125,898.96/12,969.60
6. Step 6: Final answer
   x = 10,572.87