Finding the Fourth Proportional to 8,061.72, 12,061.29 and 7,067.05

Step by Step Solution

1. Step 1: Write the proportion equation
   8,061.72 : 12,061.29 = 7,067.05 : x
2. Step 2: Convert to fraction form
   8,061.72/12,061.29 = 7,067.05/x
3. Step 3: Cross multiply
   8,061.72x = 12,061.29 × 7,067.05
4. Step 4: Simplify right side
   8,061.72x = 85,237,682.84
5. Step 5: Solve for x
   x = 85,237,682.84/8,061.72
6. Step 6: Final answer
   x = 10,573.14