Finding the Fourth Proportional to 13,499.49, 18,629.34 and 7,531.55

Step by Step Solution

1. Step 1: Write the proportion equation
   13,499.49 : 18,629.34 = 7,531.55 : x
2. Step 2: Convert to fraction form
   13,499.49/18,629.34 = 7,531.55/x
3. Step 3: Cross multiply
   13,499.49x = 18,629.34 × 7,531.55
4. Step 4: Simplify right side
   13,499.49x = 140,307,712.53
5. Step 5: Solve for x
   x = 140,307,712.53/13,499.49
6. Step 6: Final answer
   x = 10,393.56