Finding the Fourth Proportional to 9,439.75, 13,026.58 and 5,190.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,439.75 : 13,026.58 = 5,190.82 : x
2. Step 2: Convert to fraction form
   9,439.75/13,026.58 = 5,190.82/x
3. Step 3: Cross multiply
   9,439.75x = 13,026.58 × 5,190.82
4. Step 4: Simplify right side
   9,439.75x = 67,618,632.00
5. Step 5: Solve for x
   x = 67,618,632.00/9,439.75
6. Step 6: Final answer
   x = 7,163.18