Finding the Fourth Proportional to 9,152.69, 12,630.22 and 5,173.57

Step by Step Solution

1. Step 1: Write the proportion equation
   9,152.69 : 12,630.22 = 5,173.57 : x
2. Step 2: Convert to fraction form
   9,152.69/12,630.22 = 5,173.57/x
3. Step 3: Cross multiply
   9,152.69x = 12,630.22 × 5,173.57
4. Step 4: Simplify right side
   9,152.69x = 65,343,327.29
5. Step 5: Solve for x
   x = 65,343,327.29/9,152.69
6. Step 6: Final answer
   x = 7,139.25