Finding the Fourth Proportional to 13,669.88, 18,864.43 and 7,382.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,669.88 : 18,864.43 = 7,382.25 : x
2. Step 2: Convert to fraction form
   13,669.88/18,864.43 = 7,382.25/x
3. Step 3: Cross multiply
   13,669.88x = 18,864.43 × 7,382.25
4. Step 4: Simplify right side
   13,669.88x = 139,261,919.91
5. Step 5: Solve for x
   x = 139,261,919.91/13,669.88
6. Step 6: Final answer
   x = 10,187.51