Finding the Fourth Proportional to 9,157.27, 12,637.12 and 5,380.59

Step by Step Solution

1. Step 1: Write the proportion equation
   9,157.27 : 12,637.12 = 5,380.59 : x
2. Step 2: Convert to fraction form
   9,157.27/12,637.12 = 5,380.59/x
3. Step 3: Cross multiply
   9,157.27x = 12,637.12 × 5,380.59
4. Step 4: Simplify right side
   9,157.27x = 67,995,161.50
5. Step 5: Solve for x
   x = 67,995,161.50/9,157.27
6. Step 6: Final answer
   x = 7,425.27