Finding the Fourth Proportional to 12,969.69, 19,458.62 and 4,644.03

Step by Step Solution

1. Step 1: Write the proportion equation
   12,969.69 : 19,458.62 = 4,644.03 : x
2. Step 2: Convert to fraction form
   12,969.69/19,458.62 = 4,644.03/x
3. Step 3: Cross multiply
   12,969.69x = 19,458.62 × 4,644.03
4. Step 4: Simplify right side
   12,969.69x = 90,366,391.82
5. Step 5: Solve for x
   x = 90,366,391.82/12,969.69
6. Step 6: Final answer
   x = 6,967.51