Finding the Fourth Proportional to 13,099.54, 19,650.59 and 3,868.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,099.54 : 19,650.59 = 3,868.18 : x
2. Step 2: Convert to fraction form
   13,099.54/19,650.59 = 3,868.18/x
3. Step 3: Cross multiply
   13,099.54x = 19,650.59 × 3,868.18
4. Step 4: Simplify right side
   13,099.54x = 76,012,019.23
5. Step 5: Solve for x
   x = 76,012,019.23/13,099.54
6. Step 6: Final answer
   x = 5,802.65