Finding the Fourth Proportional to 9,152.76, 12,630.83 and 5,173.89

Step by Step Solution

1. Step 1: Write the proportion equation
   9,152.76 : 12,630.83 = 5,173.89 : x
2. Step 2: Convert to fraction form
   9,152.76/12,630.83 = 5,173.89/x
3. Step 3: Cross multiply
   9,152.76x = 12,630.83 × 5,173.89
4. Step 4: Simplify right side
   9,152.76x = 65,350,499.16
5. Step 5: Solve for x
   x = 65,350,499.16/9,152.76
6. Step 6: Final answer
   x = 7,139.98