Finding the Fourth Proportional to 13,365.76, 18,443.04 and 7,397.08

Step by Step Solution

1. Step 1: Write the proportion equation
   13,365.76 : 18,443.04 = 7,397.08 : x
2. Step 2: Convert to fraction form
   13,365.76/18,443.04 = 7,397.08/x
3. Step 3: Cross multiply
   13,365.76x = 18,443.04 × 7,397.08
4. Step 4: Simplify right side
   13,365.76x = 136,424,642.32
5. Step 5: Solve for x
   x = 136,424,642.32/13,365.76
6. Step 6: Final answer
   x = 10,207.02