Finding the Fourth Proportional to 13,499.87, 18,629.88 and 7,531.43

Step by Step Solution

1. Step 1: Write the proportion equation
   13,499.87 : 18,629.88 = 7,531.43 : x
2. Step 2: Convert to fraction form
   13,499.87/18,629.88 = 7,531.43/x
3. Step 3: Cross multiply
   13,499.87x = 18,629.88 × 7,531.43
4. Step 4: Simplify right side
   13,499.87x = 140,309,637.13
5. Step 5: Solve for x
   x = 140,309,637.13/13,499.87
6. Step 6: Final answer
   x = 10,393.41