Finding the Fourth Proportional to 9,392.10, 12,962.55 and 5,412.90

Step by Step Solution

1. Step 1: Write the proportion equation
   9,392.10 : 12,962.55 = 5,412.90 : x
2. Step 2: Convert to fraction form
   9,392.10/12,962.55 = 5,412.90/x
3. Step 3: Cross multiply
   9,392.10x = 12,962.55 × 5,412.90
4. Step 4: Simplify right side
   9,392.10x = 70,164,986.90
5. Step 5: Solve for x
   x = 70,164,986.90/9,392.10
6. Step 6: Final answer
   x = 7,470.64