Finding the Fourth Proportional to 13,566.72, 18,704.16 and 9,786.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,566.72 : 18,704.16 = 9,786.72 : x
2. Step 2: Convert to fraction form
   13,566.72/18,704.16 = 9,786.72/x
3. Step 3: Cross multiply
   13,566.72x = 18,704.16 × 9,786.72
4. Step 4: Simplify right side
   13,566.72x = 183,052,376.76
5. Step 5: Solve for x
   x = 183,052,376.76/13,566.72
6. Step 6: Final answer
   x = 13,492.75