Finding the Fourth Proportional to 13,443.54, 18,552.70 and 7,475.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,443.54 : 18,552.70 = 7,475.76 : x
2. Step 2: Convert to fraction form
   13,443.54/18,552.70 = 7,475.76/x
3. Step 3: Cross multiply
   13,443.54x = 18,552.70 × 7,475.76
4. Step 4: Simplify right side
   13,443.54x = 138,695,499.85
5. Step 5: Solve for x
   x = 138,695,499.85/13,443.54
6. Step 6: Final answer
   x = 10,316.89