Finding the Fourth Proportional to 13,322.72, 18,384.72 and 7,653.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,322.72 : 18,384.72 = 7,653.56 : x
2. Step 2: Convert to fraction form
   13,322.72/18,384.72 = 7,653.56/x
3. Step 3: Cross multiply
   13,322.72x = 18,384.72 × 7,653.56
4. Step 4: Simplify right side
   13,322.72x = 140,708,557.60
5. Step 5: Solve for x
   x = 140,708,557.60/13,322.72
6. Step 6: Final answer
   x = 10,561.55