Finding the Fourth Proportional to 13,410.38, 18,506.32 and 7,443

Step by Step Solution

1. Step 1: Write the proportion equation
   13,410.38 : 18,506.32 = 7,443 : x
2. Step 2: Convert to fraction form
   13,410.38/18,506.32 = 7,443/x
3. Step 3: Cross multiply
   13,410.38x = 18,506.32 × 7,443
4. Step 4: Simplify right side
   13,410.38x = 137,742,539.76
5. Step 5: Solve for x
   x = 137,742,539.76/13,410.38
6. Step 6: Final answer
   x = 10,271.34