Finding the Fourth Proportional to 13,630.98, 18,810.83 and 7,662.65

Step by Step Solution

1. Step 1: Write the proportion equation
   13,630.98 : 18,810.83 = 7,662.65 : x
2. Step 2: Convert to fraction form
   13,630.98/18,810.83 = 7,662.65/x
3. Step 3: Cross multiply
   13,630.98x = 18,810.83 × 7,662.65
4. Step 4: Simplify right side
   13,630.98x = 144,140,837.41
5. Step 5: Solve for x
   x = 144,140,837.41/13,630.98
6. Step 6: Final answer
   x = 10,574.50