Finding the Fourth Proportional to 12,969.72, 17,897.74 and 7,942.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,969.72 : 17,897.74 = 7,942.32 : x
2. Step 2: Convert to fraction form
   12,969.72/17,897.74 = 7,942.32/x
3. Step 3: Cross multiply
   12,969.72x = 17,897.74 × 7,942.32
4. Step 4: Simplify right side
   12,969.72x = 142,149,578.36
5. Step 5: Solve for x
   x = 142,149,578.36/12,969.72
6. Step 6: Final answer
   x = 10,960.11