Finding the Fourth Proportional to 13,411.51, 18,507.95 and 7,443.19

Step by Step Solution

1. Step 1: Write the proportion equation
   13,411.51 : 18,507.95 = 7,443.19 : x
2. Step 2: Convert to fraction form
   13,411.51/18,507.95 = 7,443.19/x
3. Step 3: Cross multiply
   13,411.51x = 18,507.95 × 7,443.19
4. Step 4: Simplify right side
   13,411.51x = 137,758,058.60
5. Step 5: Solve for x
   x = 137,758,058.60/13,411.51
6. Step 6: Final answer
   x = 10,271.63