Finding the Fourth Proportional to 12,365.92, 17,066.40 and 7,061.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,365.92 : 17,066.40 = 7,061.50 : x
2. Step 2: Convert to fraction form
   12,365.92/17,066.40 = 7,061.50/x
3. Step 3: Cross multiply
   12,365.92x = 17,066.40 × 7,061.50
4. Step 4: Simplify right side
   12,365.92x = 120,514,383.60
5. Step 5: Solve for x
   x = 120,514,383.60/12,365.92
6. Step 6: Final answer
   x = 9,745.69