Finding the Fourth Proportional to 13,402.89, 18,496.98 and 7,435.71

Step by Step Solution

1. Step 1: Write the proportion equation
   13,402.89 : 18,496.98 = 7,435.71 : x
2. Step 2: Convert to fraction form
   13,402.89/18,496.98 = 7,435.71/x
3. Step 3: Cross multiply
   13,402.89x = 18,496.98 × 7,435.71
4. Step 4: Simplify right side
   13,402.89x = 137,538,179.16
5. Step 5: Solve for x
   x = 137,538,179.16/13,402.89
6. Step 6: Final answer
   x = 10,261.83