Finding the Fourth Proportional to 13,598.72, 18,766.31 and 7,630.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,598.72 : 18,766.31 = 7,630.50 : x
2. Step 2: Convert to fraction form
   13,598.72/18,766.31 = 7,630.50/x
3. Step 3: Cross multiply
   13,598.72x = 18,766.31 × 7,630.50
4. Step 4: Simplify right side
   13,598.72x = 143,196,290.30
5. Step 5: Solve for x
   x = 143,196,290.30/13,598.72
6. Step 6: Final answer
   x = 10,530.13