Finding the Fourth Proportional to 9,354.76, 12,909.45 and 5,162.74

Step by Step Solution

1. Step 1: Write the proportion equation
   9,354.76 : 12,909.45 = 5,162.74 : x
2. Step 2: Convert to fraction form
   9,354.76/12,909.45 = 5,162.74/x
3. Step 3: Cross multiply
   9,354.76x = 12,909.45 × 5,162.74
4. Step 4: Simplify right side
   9,354.76x = 66,648,133.89
5. Step 5: Solve for x
   x = 66,648,133.89/9,354.76
6. Step 6: Final answer
   x = 7,124.52