Finding the Fourth Proportional to 12,642.32, 17,447.28 and 7,053.36

Step by Step Solution

1. Step 1: Write the proportion equation
   12,642.32 : 17,447.28 = 7,053.36 : x
2. Step 2: Convert to fraction form
   12,642.32/17,447.28 = 7,053.36/x
3. Step 3: Cross multiply
   12,642.32x = 17,447.28 × 7,053.36
4. Step 4: Simplify right side
   12,642.32x = 123,061,946.86
5. Step 5: Solve for x
   x = 123,061,946.86/12,642.32
6. Step 6: Final answer
   x = 9,734.13