Finding the Fourth Proportional to 9,019.79, 12,450.79 and 8,073.91

Step by Step Solution

1. Step 1: Write the proportion equation
   9,019.79 : 12,450.79 = 8,073.91 : x
2. Step 2: Convert to fraction form
   9,019.79/12,450.79 = 8,073.91/x
3. Step 3: Cross multiply
   9,019.79x = 12,450.79 × 8,073.91
4. Step 4: Simplify right side
   9,019.79x = 100,526,557.89
5. Step 5: Solve for x
   x = 100,526,557.89/9,019.79
6. Step 6: Final answer
   x = 11,145.11