Finding the Fourth Proportional to 12,645.43, 17,450.69 and 7,056.43

Step by Step Solution

1. Step 1: Write the proportion equation
   12,645.43 : 17,450.69 = 7,056.43 : x
2. Step 2: Convert to fraction form
   12,645.43/17,450.69 = 7,056.43/x
3. Step 3: Cross multiply
   12,645.43x = 17,450.69 × 7,056.43
4. Step 4: Simplify right side
   12,645.43x = 123,139,493.53
5. Step 5: Solve for x
   x = 123,139,493.53/12,645.43
6. Step 6: Final answer
   x = 9,737.87