Finding the Fourth Proportional to 13,499.95, 18,629.88 and 7,531.61

Step by Step Solution

1. Step 1: Write the proportion equation
   13,499.95 : 18,629.88 = 7,531.61 : x
2. Step 2: Convert to fraction form
   13,499.95/18,629.88 = 7,531.61/x
3. Step 3: Cross multiply
   13,499.95x = 18,629.88 × 7,531.61
4. Step 4: Simplify right side
   13,499.95x = 140,313,037.08
5. Step 5: Solve for x
   x = 140,313,037.08/13,499.95
6. Step 6: Final answer
   x = 10,393.60