Finding the Fourth Proportional to 12,826.26, 17,700.66 and 7,448.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,826.26 : 17,700.66 = 7,448.28 : x
2. Step 2: Convert to fraction form
   12,826.26/17,700.66 = 7,448.28/x
3. Step 3: Cross multiply
   12,826.26x = 17,700.66 × 7,448.28
4. Step 4: Simplify right side
   12,826.26x = 131,839,471.86
5. Step 5: Solve for x
   x = 131,839,471.86/12,826.26
6. Step 6: Final answer
   x = 10,278.87