Finding the Fourth Proportional to 10,015.39, 13,806.47 and 7,358.18

Step by Step Solution

1. Step 1: Write the proportion equation
   10,015.39 : 13,806.47 = 7,358.18 : x
2. Step 2: Convert to fraction form
   10,015.39/13,806.47 = 7,358.18/x
3. Step 3: Cross multiply
   10,015.39x = 13,806.47 × 7,358.18
4. Step 4: Simplify right side
   10,015.39x = 101,590,544.34
5. Step 5: Solve for x
   x = 101,590,544.34/10,015.39
6. Step 6: Final answer
   x = 10,143.45