Finding the Fourth Proportional to 13,499.52, 18,630.72 and 7,912.32

Step by Step Solution

1. Step 1: Write the proportion equation
   13,499.52 : 18,630.72 = 7,912.32 : x
2. Step 2: Convert to fraction form
   13,499.52/18,630.72 = 7,912.32/x
3. Step 3: Cross multiply
   13,499.52x = 18,630.72 × 7,912.32
4. Step 4: Simplify right side
   13,499.52x = 147,412,218.47
5. Step 5: Solve for x
   x = 147,412,218.47/13,499.52
6. Step 6: Final answer
   x = 10,919.81