Finding the Fourth Proportional to 12,718.78, 17,552.13 and 7,053.77

Step by Step Solution

1. Step 1: Write the proportion equation
   12,718.78 : 17,552.13 = 7,053.77 : x
2. Step 2: Convert to fraction form
   12,718.78/17,552.13 = 7,053.77/x
3. Step 3: Cross multiply
   12,718.78x = 17,552.13 × 7,053.77
4. Step 4: Simplify right side
   12,718.78x = 123,808,688.03
5. Step 5: Solve for x
   x = 123,808,688.03/12,718.78
6. Step 6: Final answer
   x = 9,734.32