Finding the Fourth Proportional to 13,365.16, 18,443.56 and 7,397.08

Step by Step Solution

1. Step 1: Write the proportion equation
   13,365.16 : 18,443.56 = 7,397.08 : x
2. Step 2: Convert to fraction form
   13,365.16/18,443.56 = 7,397.08/x
3. Step 3: Cross multiply
   13,365.16x = 18,443.56 × 7,397.08
4. Step 4: Simplify right side
   13,365.16x = 136,428,488.80
5. Step 5: Solve for x
   x = 136,428,488.80/13,365.16
6. Step 6: Final answer
   x = 10,207.77