Finding the Fourth Proportional to 9,152.39, 12,630.31 and 5,173.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,152.39 : 12,630.31 = 5,173.52 : x
2. Step 2: Convert to fraction form
   9,152.39/12,630.31 = 5,173.52/x
3. Step 3: Cross multiply
   9,152.39x = 12,630.31 × 5,173.52
4. Step 4: Simplify right side
   9,152.39x = 65,343,085.31
5. Step 5: Solve for x
   x = 65,343,085.31/9,152.39
6. Step 6: Final answer
   x = 7,139.46