Finding the Fourth Proportional to 13,499.07, 18,628.50 and 7,530.58

Step by Step Solution

1. Step 1: Write the proportion equation
   13,499.07 : 18,628.50 = 7,530.58 : x
2. Step 2: Convert to fraction form
   13,499.07/18,628.50 = 7,530.58/x
3. Step 3: Cross multiply
   13,499.07x = 18,628.50 × 7,530.58
4. Step 4: Simplify right side
   13,499.07x = 140,283,409.53
5. Step 5: Solve for x
   x = 140,283,409.53/13,499.07
6. Step 6: Final answer
   x = 10,392.08