Finding the Fourth Proportional to 13,018.72, 17,965.88 and 7,353.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,018.72 : 17,965.88 = 7,353.72 : x
2. Step 2: Convert to fraction form
   13,018.72/17,965.88 = 7,353.72/x
3. Step 3: Cross multiply
   13,018.72x = 17,965.88 × 7,353.72
4. Step 4: Simplify right side
   13,018.72x = 132,116,051.07
5. Step 5: Solve for x
   x = 132,116,051.07/13,018.72
6. Step 6: Final answer
   x = 10,148.16