Finding the Fourth Proportional to 13,755.20, 18,981.89 and 7,467.57

Step by Step Solution

1. Step 1: Write the proportion equation
   13,755.20 : 18,981.89 = 7,467.57 : x
2. Step 2: Convert to fraction form
   13,755.20/18,981.89 = 7,467.57/x
3. Step 3: Cross multiply
   13,755.20x = 18,981.89 × 7,467.57
4. Step 4: Simplify right side
   13,755.20x = 141,748,554.97
5. Step 5: Solve for x
   x = 141,748,554.97/13,755.20
6. Step 6: Final answer
   x = 10,305.09