Finding the Fourth Proportional to 9,018.08, 13,507.34 and 7,440.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,018.08 : 13,507.34 = 7,440.34 : x
2. Step 2: Convert to fraction form
   9,018.08/13,507.34 = 7,440.34/x
3. Step 3: Cross multiply
   9,018.08x = 13,507.34 × 7,440.34
4. Step 4: Simplify right side
   9,018.08x = 100,499,202.10
5. Step 5: Solve for x
   x = 100,499,202.10/9,018.08
6. Step 6: Final answer
   x = 11,144.19