Finding the Fourth Proportional to 13,109.32, 18,089.10 and 7,443.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,109.32 : 18,089.10 = 7,443.10 : x
2. Step 2: Convert to fraction form
   13,109.32/18,089.10 = 7,443.10/x
3. Step 3: Cross multiply
   13,109.32x = 18,089.10 × 7,443.10
4. Step 4: Simplify right side
   13,109.32x = 134,638,980.21
5. Step 5: Solve for x
   x = 134,638,980.21/13,109.32
6. Step 6: Final answer
   x = 10,270.48