Finding the Fourth Proportional to 13,630.72, 18,810.76 and 7,662.94

Step by Step Solution

1. Step 1: Write the proportion equation
   13,630.72 : 18,810.76 = 7,662.94 : x
2. Step 2: Convert to fraction form
   13,630.72/18,810.76 = 7,662.94/x
3. Step 3: Cross multiply
   13,630.72x = 18,810.76 × 7,662.94
4. Step 4: Simplify right side
   13,630.72x = 144,145,725.23
5. Step 5: Solve for x
   x = 144,145,725.23/13,630.72
6. Step 6: Final answer
   x = 10,575.06