Finding the Fourth Proportional to 13,681.89, 18,880.98 and 7,394.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,681.89 : 18,880.98 = 7,394.25 : x
2. Step 2: Convert to fraction form
   13,681.89/18,880.98 = 7,394.25/x
3. Step 3: Cross multiply
   13,681.89x = 18,880.98 × 7,394.25
4. Step 4: Simplify right side
   13,681.89x = 139,610,686.37
5. Step 5: Solve for x
   x = 139,610,686.37/13,681.89
6. Step 6: Final answer
   x = 10,204.05