Finding the Fourth Proportional to 13,499.96, 18,628.30 and 7,531.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,499.96 : 18,628.30 = 7,531.96 : x
2. Step 2: Convert to fraction form
   13,499.96/18,628.30 = 7,531.96/x
3. Step 3: Cross multiply
   13,499.96x = 18,628.30 × 7,531.96
4. Step 4: Simplify right side
   13,499.96x = 140,307,610.47
5. Step 5: Solve for x
   x = 140,307,610.47/13,499.96
6. Step 6: Final answer
   x = 10,393.19