Finding the Fourth Proportional to 9,354.21, 12,908.79 and 5,162.46

Step by Step Solution

1. Step 1: Write the proportion equation
   9,354.21 : 12,908.79 = 5,162.46 : x
2. Step 2: Convert to fraction form
   9,354.21/12,908.79 = 5,162.46/x
3. Step 3: Cross multiply
   9,354.21x = 12,908.79 × 5,162.46
4. Step 4: Simplify right side
   9,354.21x = 66,641,112.02
5. Step 5: Solve for x
   x = 66,641,112.02/9,354.21
6. Step 6: Final answer
   x = 7,124.18