Finding the Fourth Proportional to 12,949.36, 17,869.82 and 7,913.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,949.36 : 17,869.82 = 7,913.56 : x
2. Step 2: Convert to fraction form
   12,949.36/17,869.82 = 7,913.56/x
3. Step 3: Cross multiply
   12,949.36x = 17,869.82 × 7,913.56
4. Step 4: Simplify right side
   12,949.36x = 141,413,892.76
5. Step 5: Solve for x
   x = 141,413,892.76/12,949.36
6. Step 6: Final answer
   x = 10,920.53