Finding the Fourth Proportional to 12,942.24, 19,409.82 and 3,580.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,942.24 : 19,409.82 = 3,580.02 : x
2. Step 2: Convert to fraction form
   12,942.24/19,409.82 = 3,580.02/x
3. Step 3: Cross multiply
   12,942.24x = 19,409.82 × 3,580.02
4. Step 4: Simplify right side
   12,942.24x = 69,487,543.80
5. Step 5: Solve for x
   x = 69,487,543.80/12,942.24
6. Step 6: Final answer
   x = 5,369.05