Finding the Fourth Proportional to 12,969.06, 17,898.75 and 7,665.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,969.06 : 17,898.75 = 7,665.18 : x
2. Step 2: Convert to fraction form
   12,969.06/17,898.75 = 7,665.18/x
3. Step 3: Cross multiply
   12,969.06x = 17,898.75 × 7,665.18
4. Step 4: Simplify right side
   12,969.06x = 137,197,140.53
5. Step 5: Solve for x
   x = 137,197,140.53/12,969.06
6. Step 6: Final answer
   x = 10,578.80