Finding the Fourth Proportional to 9,392.43, 12,961.70 and 5,143.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,392.43 : 12,961.70 = 5,143.42 : x
2. Step 2: Convert to fraction form
   9,392.43/12,961.70 = 5,143.42/x
3. Step 3: Cross multiply
   9,392.43x = 12,961.70 × 5,143.42
4. Step 4: Simplify right side
   9,392.43x = 66,667,467.01
5. Step 5: Solve for x
   x = 66,667,467.01/9,392.43
6. Step 6: Final answer
   x = 7,098.00