Finding the Fourth Proportional to 9,141.87, 12,615.99 and 5,162.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,141.87 : 12,615.99 = 5,162.76 : x
2. Step 2: Convert to fraction form
   9,141.87/12,615.99 = 5,162.76/x
3. Step 3: Cross multiply
   9,141.87x = 12,615.99 × 5,162.76
4. Step 4: Simplify right side
   9,141.87x = 65,133,328.53
5. Step 5: Solve for x
   x = 65,133,328.53/9,141.87
6. Step 6: Final answer
   x = 7,124.73