Finding the Fourth Proportional to 13,598.89, 18,766.43 and 7,630.59

Step by Step Solution

1. Step 1: Write the proportion equation
   13,598.89 : 18,766.43 = 7,630.59 : x
2. Step 2: Convert to fraction form
   13,598.89/18,766.43 = 7,630.59/x
3. Step 3: Cross multiply
   13,598.89x = 18,766.43 × 7,630.59
4. Step 4: Simplify right side
   13,598.89x = 143,198,801.11
5. Step 5: Solve for x
   x = 143,198,801.11/13,598.89
6. Step 6: Final answer
   x = 10,530.18