Finding the Fourth Proportional to 9,150.75, 12,623.81 and 5,372.71

Step by Step Solution

1. Step 1: Write the proportion equation
   9,150.75 : 12,623.81 = 5,372.71 : x
2. Step 2: Convert to fraction form
   9,150.75/12,623.81 = 5,372.71/x
3. Step 3: Cross multiply
   9,150.75x = 12,623.81 × 5,372.71
4. Step 4: Simplify right side
   9,150.75x = 67,824,011.80
5. Step 5: Solve for x
   x = 67,824,011.80/9,150.75
6. Step 6: Final answer
   x = 7,411.85