Finding the Fourth Proportional to 9,392.80, 12,961.72 and 5,414.08

Step by Step Solution

1. Step 1: Write the proportion equation
   9,392.80 : 12,961.72 = 5,414.08 : x
2. Step 2: Convert to fraction form
   9,392.80/12,961.72 = 5,414.08/x
3. Step 3: Cross multiply
   9,392.80x = 12,961.72 × 5,414.08
4. Step 4: Simplify right side
   9,392.80x = 70,175,789.02
5. Step 5: Solve for x
   x = 70,175,789.02/9,392.80
6. Step 6: Final answer
   x = 7,471.23