Finding the Fourth Proportional to 13,386.30, 18,473.25 and 7,418.04

Step by Step Solution

1. Step 1: Write the proportion equation
   13,386.30 : 18,473.25 = 7,418.04 : x
2. Step 2: Convert to fraction form
   13,386.30/18,473.25 = 7,418.04/x
3. Step 3: Cross multiply
   13,386.30x = 18,473.25 × 7,418.04
4. Step 4: Simplify right side
   13,386.30x = 137,035,307.43
5. Step 5: Solve for x
   x = 137,035,307.43/13,386.30
6. Step 6: Final answer
   x = 10,236.98