Finding the Fourth Proportional to 12,433.20, 17,150.54 and 7,955.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,433.20 : 17,150.54 = 7,955.30 : x
2. Step 2: Convert to fraction form
   12,433.20/17,150.54 = 7,955.30/x
3. Step 3: Cross multiply
   12,433.20x = 17,150.54 × 7,955.30
4. Step 4: Simplify right side
   12,433.20x = 136,437,690.86
5. Step 5: Solve for x
   x = 136,437,690.86/12,433.20
6. Step 6: Final answer
   x = 10,973.66