Finding the Fourth Proportional to 9,150.51, 12,627.01 and 5,171.99

Step by Step Solution

1. Step 1: Write the proportion equation
   9,150.51 : 12,627.01 = 5,171.99 : x
2. Step 2: Convert to fraction form
   9,150.51/12,627.01 = 5,171.99/x
3. Step 3: Cross multiply
   9,150.51x = 12,627.01 × 5,171.99
4. Step 4: Simplify right side
   9,150.51x = 65,306,788.09
5. Step 5: Solve for x
   x = 65,306,788.09/9,150.51
6. Step 6: Final answer
   x = 7,136.96