Finding the Fourth Proportional to 12,355.12, 17,050.35 and 7,050.43

Step by Step Solution

1. Step 1: Write the proportion equation
   12,355.12 : 17,050.35 = 7,050.43 : x
2. Step 2: Convert to fraction form
   12,355.12/17,050.35 = 7,050.43/x
3. Step 3: Cross multiply
   12,355.12x = 17,050.35 × 7,050.43
4. Step 4: Simplify right side
   12,355.12x = 120,212,282.96
5. Step 5: Solve for x
   x = 120,212,282.96/12,355.12
6. Step 6: Final answer
   x = 9,729.76