Finding the Fourth Proportional to 13,630.34, 18,809.88 and 7,662.05

Step by Step Solution

1. Step 1: Write the proportion equation
   13,630.34 : 18,809.88 = 7,662.05 : x
2. Step 2: Convert to fraction form
   13,630.34/18,809.88 = 7,662.05/x
3. Step 3: Cross multiply
   13,630.34x = 18,809.88 × 7,662.05
4. Step 4: Simplify right side
   13,630.34x = 144,122,147.00
5. Step 5: Solve for x
   x = 144,122,147.00/13,630.34
6. Step 6: Final answer
   x = 10,573.63