Finding the Fourth Proportional to 13,502.72, 18,635.52 and 7,914.24

Step by Step Solution

1. Step 1: Write the proportion equation
   13,502.72 : 18,635.52 = 7,914.24 : x
2. Step 2: Convert to fraction form
   13,502.72/18,635.52 = 7,914.24/x
3. Step 3: Cross multiply
   13,502.72x = 18,635.52 × 7,914.24
4. Step 4: Simplify right side
   13,502.72x = 147,485,977.80
5. Step 5: Solve for x
   x = 147,485,977.80/13,502.72
6. Step 6: Final answer
   x = 10,922.69