Finding the Fourth Proportional to 9,152.82, 12,630.40 and 5,173.70

Step by Step Solution

1. Step 1: Write the proportion equation
   9,152.82 : 12,630.40 = 5,173.70 : x
2. Step 2: Convert to fraction form
   9,152.82/12,630.40 = 5,173.70/x
3. Step 3: Cross multiply
   9,152.82x = 12,630.40 × 5,173.70
4. Step 4: Simplify right side
   9,152.82x = 65,345,824.39
5. Step 5: Solve for x
   x = 65,345,824.39/9,152.82
6. Step 6: Final answer
   x = 7,139.42