Finding the Fourth Proportional to 13,367.88, 18,445.96 and 7,398.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,367.88 : 18,445.96 = 7,398.72 : x
2. Step 2: Convert to fraction form
   13,367.88/18,445.96 = 7,398.72/x
3. Step 3: Cross multiply
   13,367.88x = 18,445.96 × 7,398.72
4. Step 4: Simplify right side
   13,367.88x = 136,476,493.17
5. Step 5: Solve for x
   x = 136,476,493.17/13,367.88
6. Step 6: Final answer
   x = 10,209.28