Finding the Fourth Proportional to 9,150, 12,622.77 and 5,371.95

Step by Step Solution

1. Step 1: Write the proportion equation
   9,150 : 12,622.77 = 5,371.95 : x
2. Step 2: Convert to fraction form
   9,150/12,622.77 = 5,371.95/x
3. Step 3: Cross multiply
   9,150x = 12,622.77 × 5,371.95
4. Step 4: Simplify right side
   9,150x = 67,808,889.30
5. Step 5: Solve for x
   x = 67,808,889.30/9,150
6. Step 6: Final answer
   x = 7,410.81