Finding the Fourth Proportional to 13,364.40, 18,443.10 and 7,315.17

Step by Step Solution

1. Step 1: Write the proportion equation
   13,364.40 : 18,443.10 = 7,315.17 : x
2. Step 2: Convert to fraction form
   13,364.40/18,443.10 = 7,315.17/x
3. Step 3: Cross multiply
   13,364.40x = 18,443.10 × 7,315.17
4. Step 4: Simplify right side
   13,364.40x = 134,914,411.83
5. Step 5: Solve for x
   x = 134,914,411.83/13,364.40
6. Step 6: Final answer
   x = 10,095.06