Finding the Fourth Proportional to 12,443.10, 17,165.43 and 7,963.26

Step by Step Solution

1. Step 1: Write the proportion equation
   12,443.10 : 17,165.43 = 7,963.26 : x
2. Step 2: Convert to fraction form
   12,443.10/17,165.43 = 7,963.26/x
3. Step 3: Cross multiply
   12,443.10x = 17,165.43 × 7,963.26
4. Step 4: Simplify right side
   12,443.10x = 136,692,782.10
5. Step 5: Solve for x
   x = 136,692,782.10/12,443.10
6. Step 6: Final answer
   x = 10,985.43