Finding the Fourth Proportional to 9,412.56, 12,989.58 and 5,163.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,412.56 : 12,989.58 = 5,163.82 : x
2. Step 2: Convert to fraction form
   9,412.56/12,989.58 = 5,163.82/x
3. Step 3: Cross multiply
   9,412.56x = 12,989.58 × 5,163.82
4. Step 4: Simplify right side
   9,412.56x = 67,075,853.00
5. Step 5: Solve for x
   x = 67,075,853.00/9,412.56
6. Step 6: Final answer
   x = 7,126.21