Finding the Fourth Proportional to 12,718.89, 17,553.12 and 7,055.43

Step by Step Solution

1. Step 1: Write the proportion equation
   12,718.89 : 17,553.12 = 7,055.43 : x
2. Step 2: Convert to fraction form
   12,718.89/17,553.12 = 7,055.43/x
3. Step 3: Cross multiply
   12,718.89x = 17,553.12 × 7,055.43
4. Step 4: Simplify right side
   12,718.89x = 123,844,809.44
5. Step 5: Solve for x
   x = 123,844,809.44/12,718.89
6. Step 6: Final answer
   x = 9,737.08