Finding the Fourth Proportional to 22,780.56, 34,171.06 and 7,989.83

Step by Step Solution

1. Step 1: Write the proportion equation
   22,780.56 : 34,171.06 = 7,989.83 : x
2. Step 2: Convert to fraction form
   22,780.56/34,171.06 = 7,989.83/x
3. Step 3: Cross multiply
   22,780.56x = 34,171.06 × 7,989.83
4. Step 4: Simplify right side
   22,780.56x = 273,020,854.92
5. Step 5: Solve for x
   x = 273,020,854.92/22,780.56
6. Step 6: Final answer
   x = 11,984.82