Finding the Fourth Proportional to 13,451.28, 18,562.56 and 7,482.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,451.28 : 18,562.56 = 7,482.72 : x
2. Step 2: Convert to fraction form
   13,451.28/18,562.56 = 7,482.72/x
3. Step 3: Cross multiply
   13,451.28x = 18,562.56 × 7,482.72
4. Step 4: Simplify right side
   13,451.28x = 138,898,438.96
5. Step 5: Solve for x
   x = 138,898,438.96/13,451.28
6. Step 6: Final answer
   x = 10,326.04