Finding the Fourth Proportional to 9,137.49, 12,608.91 and 5,157.83

Step by Step Solution

1. Step 1: Write the proportion equation
   9,137.49 : 12,608.91 = 5,157.83 : x
2. Step 2: Convert to fraction form
   9,137.49/12,608.91 = 5,157.83/x
3. Step 3: Cross multiply
   9,137.49x = 12,608.91 × 5,157.83
4. Step 4: Simplify right side
   9,137.49x = 65,034,551.22
5. Step 5: Solve for x
   x = 65,034,551.22/9,137.49
6. Step 6: Final answer
   x = 7,117.33