Finding the Fourth Proportional to 9,138.02, 12,610.57 and 5,361.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,138.02 : 12,610.57 = 5,361.25 : x
2. Step 2: Convert to fraction form
   9,138.02/12,610.57 = 5,361.25/x
3. Step 3: Cross multiply
   9,138.02x = 12,610.57 × 5,361.25
4. Step 4: Simplify right side
   9,138.02x = 67,608,418.41
5. Step 5: Solve for x
   x = 67,608,418.41/9,138.02
6. Step 6: Final answer
   x = 7,398.59