Finding the Fourth Proportional to 12,365.72, 17,070.61 and 7,059.51

Step by Step Solution

1. Step 1: Write the proportion equation
   12,365.72 : 17,070.61 = 7,059.51 : x
2. Step 2: Convert to fraction form
   12,365.72/17,070.61 = 7,059.51/x
3. Step 3: Cross multiply
   12,365.72x = 17,070.61 × 7,059.51
4. Step 4: Simplify right side
   12,365.72x = 120,510,142.00
5. Step 5: Solve for x
   x = 120,510,142.00/12,365.72
6. Step 6: Final answer
   x = 9,745.50