Finding the Fourth Proportional to 12,824.01, 17,697.06 and 7,158.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,824.01 : 17,697.06 = 7,158.69 : x
2. Step 2: Convert to fraction form
   12,824.01/17,697.06 = 7,158.69/x
3. Step 3: Cross multiply
   12,824.01x = 17,697.06 × 7,158.69
4. Step 4: Simplify right side
   12,824.01x = 126,687,766.45
5. Step 5: Solve for x
   x = 126,687,766.45/12,824.01
6. Step 6: Final answer
   x = 9,878.95