Finding the Fourth Proportional to 13,706.30, 18,914.69 and 7,418.68

Step by Step Solution

1. Step 1: Write the proportion equation
   13,706.30 : 18,914.69 = 7,418.68 : x
2. Step 2: Convert to fraction form
   13,706.30/18,914.69 = 7,418.68/x
3. Step 3: Cross multiply
   13,706.30x = 18,914.69 × 7,418.68
4. Step 4: Simplify right side
   13,706.30x = 140,322,003.67
5. Step 5: Solve for x
   x = 140,322,003.67/13,706.30
6. Step 6: Final answer
   x = 10,237.77