Finding the Fourth Proportional to 12,643.13, 17,447.51 and 7,054.13

Step by Step Solution

1. Step 1: Write the proportion equation
   12,643.13 : 17,447.51 = 7,054.13 : x
2. Step 2: Convert to fraction form
   12,643.13/17,447.51 = 7,054.13/x
3. Step 3: Cross multiply
   12,643.13x = 17,447.51 × 7,054.13
4. Step 4: Simplify right side
   12,643.13x = 123,077,003.72
5. Step 5: Solve for x
   x = 123,077,003.72/12,643.13
6. Step 6: Final answer
   x = 9,734.69