Finding the Fourth Proportional to 13,018.23, 17,964.28 and 7,275.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,018.23 : 17,964.28 = 7,275.31 : x
2. Step 2: Convert to fraction form
   13,018.23/17,964.28 = 7,275.31/x
3. Step 3: Cross multiply
   13,018.23x = 17,964.28 × 7,275.31
4. Step 4: Simplify right side
   13,018.23x = 130,695,705.93
5. Step 5: Solve for x
   x = 130,695,705.93/13,018.23
6. Step 6: Final answer
   x = 10,039.44