Finding the Fourth Proportional to 12,435.94, 18,661.59 and 5,040.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,435.94 : 18,661.59 = 5,040.46 : x
2. Step 2: Convert to fraction form
   12,435.94/18,661.59 = 5,040.46/x
3. Step 3: Cross multiply
   12,435.94x = 18,661.59 × 5,040.46
4. Step 4: Simplify right side
   12,435.94x = 94,062,997.93
5. Step 5: Solve for x
   x = 94,062,997.93/12,435.94
6. Step 6: Final answer
   x = 7,563.80